rock river arms accuracy rock river arms accuracy

If you are looking for a high-quality AR-15, then Rock River Arms is a great option. Guys from my grandpas era (at least in my area of the Appalachians) seemed to cling to the classical deer rifle forms, led prominently by the Winchester model 94 lever action. If youre willing to spend a little extra money, theyre definitely worth considering. This eliminates all stress risers in the barrel that can cause a barrel to shift point of impact as it heats when shot. Rock River warned us that the guns upper and lower fit tightly together, and that was indeed the case, requiring some extra force even with the supplied tool. The adjustable buttstock will interchange, as will the trigger and safety mechanisms, but that is about it. Those of our fathers generation, on the other hand, usually gravitated toward bolt action hunting rifles of the Remington 700 or Winchester model 70 flavor. In the world of .308 Win. For everyone else, then: Rock River Arms got into making AR-15 rifles back in the late 1990s after years of doing custom work on 1911s. This gives the hammer considerable inertia. Well, not any more of an idiot than I usually feel like, I suppose I should say. The Wylde chamber and tight freebore prevent that from occurring. Rock River Arms is considered to be one of the most reliable AR-15 manufacturers because of the materials they use and the quality of their products. Newer models are sporting a more robust Hogue grip. I have yet to find a Rock River rifle that wasnt extremely accurate, so its only natural to have a favorable impression of the brand. A big reason that these rifles shoot so well is the barrel. However, on this rare occasion, I had some first hand experience with the question offered. The monolithic receivers and . The RRA ATH comes with an. The handguard on the ATH V2 is ideal for a general-use rifle. The 18-inch barrel that Rock River chose to install has a 1:8-inch twist and features a mid-length gas system. resulting in 1.5-MOA accuracy at 100 yards. All of these options bring the gun to a wallet-emptying $1994 retail price. Theyve managed this because they make excellent guns. As a result, we went underground. If youre looking for a good, dependable AR at a reasonable price, I dont think you could go wrong with a Rock River Arms product. Fluted Stainless Steel Bead Blasted Fluted Stainless: +$35.00. AR1700.V1 Sale LAR-15M R3 Competition Starting at: $1,525.00. The Rock River Arms X-Series LAR-6.8 AR-15 is specifically designed for this bigger brother to the 5.56 NATO. The dimensions of the barrel extension are different, and the bolt carrier and charging handle are both longer. Fortunately, our established test protocols took care of this requirement on their own. Not cheap, but not horribly expensive, either. This came in very handy when we decided to go ahead and test the .223 cartridge for BBTI last year. Unlock the Benefits of Knowing Your Winchester Serial Number, Complete Buyers Guide to the Sig Sauer P228. Overall, Rock River Arms is a good brand that makes high quality AR-15s. Your prediction proved true, as we were besieged with other requests to visit additional limbs on the AR family tree: New caliber performance match-ups, more accessories testing, and national-match gun comparisons were just a few of the suggestions that popped up. RRA offers two AR-platform rifles chambered in .350 Legendblack phosphate or stainless-steel barrels. This often requires carrying guns through thickets of brush, and a rest, if available, is a handy tree branch. And since then, they have continued to be one of the major manufacturers of AR-platform guns and parts. This might sound ridiculous, but not to the keen ears of a 'yote. So, if youre looking for a cheap AR-15, Rock River Arms probably isnt the best option. The really nice thing about Rock River Arms is that you can order this specific rifle custom-made to your taste and requirements; youre not stuck with a rifle only to purchase your favorite parts later. Accurate to 1 MOA, or about one-inch at 100 yards. Full Member. RRAGE LAR-15 Type: Direct-impingement, semiautomatic Cartridge: 5.56 NATO Barrel: 16 in., 1:9-in. I know several manufacturers that swear by the process and they all turn out highly accurate rifles, so there is something to be said for the treatment. The stock also has flush cups compatible with quick-release sling swivels, including one at the wrist and one at the toe. Facing off in a handgun challenge featuring the smallest professional-grade enclosed red dot sight on the market, Eric and Tom put the Acro P-2 to the distance test by doing a walk-back challenge. Gun shoots better than I do because for 5 I just to an inch and know it is me. SIG Sauer P322 Rimfire Pistol: First Look, Non-Lethal Personal & Home Defense with Byrna, Range Tested: EAA Girsan Pistols & Shotguns, New for 2023: Christensen Arms Modern Hunting Rifle (MHR), New for 2023: All-American RIA 5.0 Sporting Pistol, New for 2023: FN Rush 9Ti Pistol Suppressor, New Big Bore Pistols for 2023: FN 510 Tactical and FN 545 Tactical, New for 2023: FN SCAR 15P Rifle Caliber Pistol, First Look: Taurus Raging Hunter 460 Magnum Revolver With 10.5-Inch Barrel, New-for-2023 Taurus Judge Executive Grade 410/.45 Colt Revolver, Smith & Wesson Equalizer and the Brand New M&P 5.7 Pistol. In the time since it reacquired the rights to the BAR-10/LAR-8, Rock River replaced the original charging handle with a more common design and refined the extractor for better performance. It also included an optional scout rail to raise the scope height, but we found it unnecessary with the LaRue mounts. It made all the difference in my performance. Save my name and email to use for future comments. Several years ago, I was visiting with a good friend of mine when the discussion turned to the guns he carried on duty.. It really comes down to personal preference. But the chances are if youre in that group, this will be a refresher. Once the barrels get to Colona, Illinois, Rock River finishes the chambering job and then cryogenically stress-relieves the barrel before mating it to an upper receiver. Its much easier to shoot with this trigger than with a standard variant. Rock River Arms has a reputation for making high quality AR-15s, but they also have a reputation for being expensive. Select Trigger. 2023 Outdoor Sportsman Group. After our article on "Compact AR Carbines" (October 2007) and a related article on "AR-15 Adjustable Stocks" (March 2008), some of you warned us that we had . Rock Rivers winter triggerguard solves this problem. Item Number Description Select Price. Rock River Arms' new Fred Eichler Series LAR-15 Predator joins a growing number of AR-platform rifles and carbines specifically configured for the serious coyote and bobcat hunter. Editor's Note: This article originally appeared in the May issue of Gun Digest the Magazine. Rock River Arms (RRA) has introduced a new AR-style rifle to its lineup, designed specifically with the modern hunter in mind, with the new All Terrain Hunter (ATH). Their AR-15s are some of the most durable and reliable on the market, and they offer a lifetime warranty on their products. They offer a variety of barrel lengths and profiles to choose from, so you can find the perfect one for your needs. Aside from being a superb cartridge for deer, hogs, and bear, the .350 Legend and rifles so-chambered, such as the Rock River Arms LAR-15M, may be among the few firearm/ammo matchups in stock this seasonat least for the next month or so. Firearms dont get much more iconic than John Moses Brownings legendary Auto-5 semi-auto shotgun, affectionately called the Humpback for its distinctive drop at the rear of the receiver. Several have stepped up to the .350 Legend plate, and one of the most recent is Rock River Arms. But the Rock River Arms guns have a very solid reputation for reliability. Rob has a troublesome habit of pulling guns and things apart to see how they work; occasionally, he manages to get them back together With its plug-n-play simplicity, environmentally adaptive technology, and low-profile desi. All three exceed the Rock River .75" factory accuracy guarantee. I like the RRA star safety selector, which rolls nicely under your thumb (for right-hand shooters). Their gun arrived in a plain cardboard box, with no gun case, just the gun sandwiched between two sheets of foam, along with a set of tools and directions for the Geissele trigger, and a modified version of their The AR-15 Complete Owners Guide.The FAR-15 inside was a striking gun, complete with a Magpul, PRS Precision adjustable sniper stock, $245, which provides exact cheek-weld and LOP adjustments. At one . Get Guns.com offers and news!! Rock River seems to understand the hunter when they put together this gun. One of the challenges of introducing an all-new cartridge is getting rifle manufacturers to chamber for the new round. Features Upper Receiver: Forged with Fixed Carry Handle I look forward to hitting the range again, and Im certain that I wont need to burn through too much more ammo before this rifle and I approach the -MOA mark together. The other competitors were already lapped in at the factory, and required no such break-in. The majority of Rock River Arms parts are mil-spec, including the receivers, barrels, handguards, and more. The hammer in Rock Rivers trigger moves most of the mass to a location much closer to the trigger pin. You have entered an incorrect email address! Caleb Giddings, Marketing Manager at Taurus, introduces the all-new TaurusTX 22 Compact. The Standard Operator has a 20-inch, cryo-treated chrome-moly barrel. We knew this test would prove to be hotly contested, so we chose topnotch mounts and scopes for this showdown. No other stainless barrel options are offered, although Bushmaster does have a 4150 chrome-moly vanadium steel version of this gun called the Bushmaster Varminter. Winchester seized this opportunity to develop an entirely new cartridge that would fall within these parameters while utilizing manufacturing efficiencies to keep production costs down. The TaurusTX 22 Compact delivers class-leading reliability, capacity, and shootability in a 22 LR platform, and it's cut for a slide-mounted mini red dot. The handguard is RRAs own design, and I like it for its smooth simplicity. The rear half of the fore-end is rounded and smooth for a comfortable hold, while the front half has four rails that provide plenty of space for mounting accessories. Although the particular model tested for this review was a few years old and had seen plenty of use, it was still as tight as any gun I have shot. The Fulton turned in the best overall grouping at 0.89 inch, despite some balky performance by the Remington ammo we used that none of the guns could group under 1 inch. Ballistic Silver Tip SBST223B, $21.48/20, and Black Hills Match New Production Red Box 50-gr. The LAR-15 X-Series X-1 Rifle in .223/5.56mm from Rock River Arms is available at a manufacturer suggested retail price of $1,450.00 and $1,500.00, depending on the stock and color option (Black and Tan). Our testers said the Bushmaster was handsome and svelte at 8.84 pounds, due to its lighter-weight barrel, and a vented, free-floated forend that included a sling/bipod stud mounted. Remington 700 accuracy international AX chassis package. The rifles they were issued were manufactured by Rock River Arms, and were carbine variants in similar spec to the U.S. militarys M4. The Rock River Arms R3 Competition Rifle is designed for and has the feel of a competition rifle, yet the same platform is spot-on if your hunts require a lot of walking or if your predator sets demand exceptional accuracy out to the limits of the cartridge along with the ability to make fast follow-up shots. You have entered an incorrect email address! The RRA's have had a very good reputation for high quality products at a good price. Rock River Arms originally designed and patented the system back in 2005. The case length hits the 1.71-inch mark with an overall cartridge length of 2.26 inches. . Its an aggressive little thing that, should you run out of ammo to fend off a charging beast, could be turned into a defensive tool in its own right. Regardless, youll get a gun with a fit and finish better than most AR rifles available on the market right now, even at a significantly higher price. Get the latest news and reviews from Gundigest.com. Its like tapping the barrel with a hammer between shots, but the folks at Rock River obviously found a consistent way to avoid this from happening in the V2 during its assembly process. Rock River Arms uses barrels from a variety of manufacturers, including FN, Criterion, and Wilson. Colt Model 1861 Special Musket: What's Its Value? This rifle is fed by a 10-round AICS-pattern detachable box magazine. We didnt have any problems with the gun operating at all, but I didnt expect any. We found it an excellent choice for extreme accuracy testing, plus it was a designated tornado shelter to boot. This is topped off with Rock River's .308 A2 flash hider. Rock River, like Fulton, also offers many options to customize your gun, and even offers four different models if the A4 isnt your cup of tea. And almost all guns are built for a specific orderit is rare that youll find a new one for sale someplace. (stock extended) Weight: 5 lbs., 11 oz. The FALs feed lips are built into the receiver rather than the magazine itselfa feature that, in theory, should offer more reliable feeding. The BCG also has a properly staked gas key to ensure reliability. They have to improve quality, offer customized options and mark it all at a fair pricesounds like the ideal business model, but no its not. weight, the rifle is an easy carry when outfitted with a quality sling. That said, if you dont have to lug it very far, it has a lot of unique features that make it enjoyable to shoot. Rock River goes the extra steps of cryogenically treating the barrel to relieve stressan accuracy robbing characteristicand then lapping each barrel before shipping to the customer. To some, a varmint hunter is someone who blazes away at prairie dogs and other such small targets from a rest. Jeff Bradley shows off the Modern Hunting Rifle (MHR) from Christensen Arms at SHOT Show 2023. Interestingly, Bushmasters directions require barrel cleaning after every 20 rounds, for the first 60 rounds, to ensure proper break-in. The ATH V2 comes with an 18-inch, stainless steel, heavy match barrel. Like 3/8 to 5/8 of and inch accuracy for three shots. Here are the features to watch out for. Metallurgists indicate that the extreme temperatures eliminate the stress imparted on the metal from cutting the chamber and contouring the barrel profile. After our article on Compact AR Carbines (October 2007) and a related article on AR-15 Adjustable Stocks (March 2008), some of you warned us that we had opened Pandoras Box. He pointed out how good the Rock River trigger was, so Ive had it in that rifle ever since. Knowing first-hand the accuracy reputation of RRA rifles through many weve tested for Shoot On and looking at the ballistic performance of the two cartridges tested for this evaluation, I must conclude that neither load hit this particular LAR-15s sweet spot, although the Hornady American Whitetails performance would absolutely get the job done. As configured, our testers said the FAR15 was a first-class performer that richly deserved the A grade we gave it. In 2003 they got a big government contract to supply the Drug Enforcement Administration with a bunch of AR-15 style guns. That changed several years ago when Michigan decided to allow the use of straight-wall cartridges in .35 caliber or larger with case lengths ranging from 1.16- (minimum) to 1.80-inch (maximum). rifle. Interestingly, while testing the LAR-15M, a guy set up on the bench next to me and pulled out a youth model Savage bolt-action. With the LAR-8, the choice of the FN-FAL magazine created the opportunity for a pair of significant ergonomic improvements. After installing and zeroing a TRUGLO Omnia 8a suitable optic for this firearm platformI set up for ballistic and group size evaluation. This handle received mostly positive reviews, although our female tester found it a little too large. A few other features that lend the LAR-15M to hunting include the winter trigger guard, making the trigger more accessible when wearing cold-weather gloves; the Operator CAR stock, with its generous cheek weld and length-of-pull adjustability to accommodate clothing layers; and the overmolded A2 grip. The Rock River A4 won some points from us when we uncrated it to find a blue plastic breakdown case with foam storage areas for extras, like scopes. The other gun barrels come lapped from the factory and do not require this break-in procedure. More load testing is definitely on the menu. Their AR-15s are made with forged aluminum receivers, chrome lined barrels, and MIL-SPEC parts. The design was licensed to Bushmaster, and during the course of about three years, the company built and sold several thousand rifles. The BT-3's furniture includes a Magpul PRS stock and Hogue rubber over-molded grip. The gun was termed a Sexy Beast by our female tester. Customer experience was, and still is, the primary focus, a key to the firms longevity and success. At the time, both AR-10 and SR-25 magazines were scarce and expensive, so Rock River designed its own AR-10-style rifle around a more abundant and affordable magazine. An exceptionally volatile Texas spring brought a series of gusty winds, heavy rain, the occasional hailstorm, and a few tornados thrown in for good measure. The RRA LAR-15 is a quality gun, in just about any configuration you can come up with. The safety lever also sported a rounded knurled knob for easy activation. When it comes to comparing Rock River Arms to other manufacturers, there is no clear winner. We encourage you to also support these organizations as we continue to fight for our fundamental rights. ), it would have shot gaudy numbers. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Gun Tests has been independently reviewing firearms since 1989. Once we began firing, we took the time to swab each barrel after each ammo change to ensure carbon build-up did not influence the guns accuracy with the new ammo. Eric Poole and Tom Beckstrand test the Aimpoint Acro P-2 against one of red dot sights' biggest myths: distance. The company says on their website that most orders for built guns will take 60 to 90 days. Ruger's multi-role small frame autoloading rifle - Sear - combines AR-10 power with AR-15 Portability. We got a quartet of guns that matched these specifications from Bushmaster, Fulton Armory, Rock River Arms, and Stag Arms, along with some options they felt the varmint/predator hunter would like. Also, it digested everything we fed with nary a malfunction. The reset on the trigger was smaller than I expected, so it allowed for very quick follow-up shots. Rock River Arms produces some of the most reliable and durable AR-15s on the market today. Im talking no slop, no gaps and excellent quality. OK, I wanted a scope that would make me look good and the Tango6 certainly didnt fail me in that regard. We spent the better part of two days recording data in what Bass Pro employees affectionately call the Dungeon. Our time there also allowed us to schedule testers to come in and fire away, including a young lady who broke away from her teachers job to school us, by posting the second best group of 0.49 inch in our tests. Rock River Arms is known for being accurate due to the materials they use and the quality of their products. SAAMI Accepts 30 Super Carry As New Standardized Cartridge, SHOT 2022: Federal Premium Announces 30 Super Carry Cartridge, Remington Introduces New Model 597 Rifles. This will cause the occasional flyer when shooting groups because the other end of that gas tube is attached directly to the barrel. All Guns and Ammo subscribers now have digital access to their magazine content. Given that the .350 Legend cartridge is intended for hunting applications out to 250 yards, the LAR-15M is ideally suited to the task. Not only did I get to learn even more about the platform, I got to shoot his Rock River Arms LAR-15 as part of the test sequence. For testing purposes we selected three mid-range bullet weights with different price points: The Remington Express 55-gr. I settled in on a steady concrete bench and set up my Caldwell The Rock rest. One of my Ballistics By The Inch buddies is very knowledgeable about ARs. The Rock River Arms RRage Carbine 's straightforward construction and choice of components allows Rock River Arms to achieve a very reasonable MSRP of $759.99, and real-world prices will. There is a reason almost all of the so-called match triggers available today have a hammer shape very similar to the one found on this Rock River. Keep in mind that, although I dont shoot a lot of long guns, Im a professional firearms photographer and I recognize quality and attention to detail when I see it. Epic 22 Pocket Pistol: The Beretta 71 Jaguar. Rock River Arms has been around since 1996 when brothers Mark and Chuck Larson founded the company in Cleveland, Illinois. Let me put this out there right away: Im not a rifle shooter by trade. The barrel and trigger are certainly the two greatest contributors to the V2s accuracy, but Rock River gets the small things right that most others miss. Unless otherwise noted, these reviews carry the guns prices at the time of the original review. I shot five-round groups at 100 yards with Remington 168-grain BTHP, Lapua 167-grain BTHP, Hornady 168-grain A-Max, Hornady 155-grain TAP A-Max, Hornady 110-grain TAP Urban, and Federal American Eagle 150-grain BTFMJ ammunition. He asked what I was shooting, and then said, Well, thats funny. People appreciate the quality of their products and the fact that they offer a lifetime warranty. The company has created a unique, so-called Star safety selector switch that is both fast and positive. Get 12 Issues a year of the country's best firearms writing. However, if youre willing to spend a little extra money on your rifle, Rock River Arms is definitely worth considering. Sporting a medium-weight 16-inch stainless steel barrel, it represents the top of Rock River's current four-model line of ARs specifically configured for coyote pursuit. The included magazine, which is specific to the .350 Legend, boasts a 10-round capacity. Although Ive shot a few, I didnt really know much about them until a couple of years ago. This allows the hammer to move faster (once released) and still get positive ignition of the cartridge without generating a ton of reticle disturbance. Minuteman. So got a brand new Rock River Arms Predator Pursuit in .223. The barrels Rock River use come from the Connecticut-based company, Wilson Arms (wilsonarms.com). Leading the charge is RRAs Operator muzzle brake. AR-15s tend not to fit standard gun cases when set up with the high mounts required to clear the charging handle, and still provide a solid sight picture. If so, you may be wondering which manufacturer is the best. What should the discerning collector look for in a potential buy? Best precision/Varmint/3-Gun Bravo Company (BCM) 18 Upper Decent quality, accurate, soft shooting $780 at Rainier Arms Jump to Details Best Budget Short Barrel Option Palmetto State Armory 10.5 Wallet friendly, decently reliable $329 at Palmetto State Armory Jump to Details Best Lightweight Upper Faxon ION Upper Subscriber Services. Rock River Arms LAR-15 Caliber: 5.56mm/.223 Cal. Each company has its own strengths and weaknesses. As a result, Rock River rifles enjoy significantly improved reliability with all types of 5.56mm ammunition. Accurate AR-15 Rifles: Buy the Fulton Armory, Rock River Guns, Fulton Armory is one of the top providers of M1, M1a, and M14, competition guns, and Clint McKee (the owner) and Walt Kuleck (sales manager) have also written books on firearms, including, Their gun arrived in a plain cardboard box, with no gun case, just the gun sandwiched between two sheets of foam, along with a set of tools and directions for the Geissele trigger, and a modified version of their, SIG Sauer P365XL Spectre P365V001 9mm Luger, Springfield Armory Hellcat Pro HCP9379BOSP 9mm Luger, SHOT 2023: Savage Arms Introduces 1911 Government Model Pistols, 5 Best 9mm Pistols for Concealed Carry in 2023, New Shooters Guide: The Best Gun For Home Defense Isnt a. It is ambidextrous as well and can be activated with the trigger finger. One I especially like is the winter triggerguard; its oversized and creates an opening large enough for a gloved finger. One of the challenges of introducing an all-new cartridge is getting rifle manufacturers to chamber for the new round. If you a, Those who need an easily managed carry pistol without sacrificing ergonomics and performan, With the new Veracity PH, guessing holdover, doing math, or running DOPE cards are no more, Burris Optics caters to Precision Rifle competitors with a made-in-the-USA riflescope buil, Youve invested a lot in your guns, now invest in making yourself a better shooter by Brad, TESTED: Rock River Arms LAR-15M .350 Legend, Straight-wall rifle cartridges are getting big play in hunting circles this year, and Rock River Arms has delivered an AR-platform chambered for this exciting new round, Premier Body Armor Releases Full Line of Vertx-Compatible Armor, Smith & Wesson Releases New 9mm Pistol Carbine: Introducing the M&P FPC, AR-platform rifles chambered in .350 Legend, Hornady American Whitetail, 170-gr. Rock River's LAR-15LH Pistol is accurate, compact and now left-handed. The first time I bought one was in 2006 when one of my Special Forces teammates built an AR-15 for me. twist Overall Length: 36 in. The accuracy increase gained by this hammer profile makes every other hammer shape irrelevant. Contrary to what youll find on the internet, most rifles are not capable of this kind of performance with factory ammunition. Once they hit 300 below zero, theyll bring the barrels up (also in steps) to 200 degrees above zero. This means that they will fit with most other AR-15 parts on the market. As I write this, a quick Internet search reveals .350 Legend is among the few cartridges still available from online retailers. However, I always thought they were a good platform, but I was more than a bit intimidated by the myriad options, terms and manufacturers. Of course, all of this comes at a price but if youre looking for an AR-15 that will serve you well for many years to come, then the Rock River Arms is definitely worth considering. Flash forward to today. For a couple hundred more, you can get a gun fitted with extra features, maybe a nicer trigger or barrel or sighting system. Rock Rivers triggers not only have a lighter pull weight and crisper let-off, the hammer shape promotes excellent accuracy. Feb 16, 2019 748 . The reason is that the base price for the FAR15 is $900, and every gun is bench built, so each shooter can pick and choose the options he can afford. After mounting the scopes, each gun was given a good general cleaning, carefully lubricated, trigger pull weights checked on a digital gauge, and then it was off to the range. Then again, this is the beauty of the MSR its a completely modular system as long as the foundation is there, and the BT-3 is one heck of a foundation upon which to personalize a precision rifle build. This makes them some of the most accurate AR-15s on the market. For years, deer hunters in certain states and areas were limited in their firearm options due to regulations curtailing the use of high-powered centerfire rifle cartridges. When the carrier key hits the gas tube, that disturbance travels down the tube and into the barrel. The RRAGE carbine has a lightweight, 16-inch, chrome-moly barrel that mikes 0.772 inch at the muzzle. All Rights Reserved. The handle was a palm swell adjustable pistol grip, which featured a large base that can be adjusted via a hex wrench to set the proper trigger pull angle. My buddy had a significant amount of experience on several of them, so I value his opinion of the platform. I wanted to do this as by the book as possible, so waiting for calm winds was my only option. JavaScript is disabled. Their AR-15s are made with forged aluminum receivers, chrome lined barrels, and MIL-SPEC parts. Available for both RF and RM licensing. One of the things that makes the Rock River Arms so accurate is its attention to detail and craftsmanship. Our gun sported an Ergo grip, comfortable but woefully undersized for hoisting the gun around. In lieu of the standard charging handle, the side-cocking module replaces the bolt cover and fits into the side of the gun by machining away the brass deflector. The bottom of the gas block has a short length of Picatinny rail for attaching a bipod. At each temperature step, Rock River will let the barrels soak at that temp for a specific period of time. Manufacturer: Rock River Arms; (866) 980-7625; www.rockriverarms.comCaliber: .308 Win.Mechanism Type: direct-gas-impingement-operated semi-automatic, center-fire rifleReceiver: 7075-T6 forged matte-black aluminum alloyBarrel: 20" matte-black steelRifling: six-groove, 1:10" RH twistMagazine: one 20-round FN-FAL-type detachable box, compatible with both inch and metric pattern FN-FAL magazines; Rock River Arms polymer 20-round magazines available as aftermarket accessories. 49865 Leupold QRW 30mm Quick Detach Mounts for a robust, portable mount.