The ADM UIC-180 billet 7000 Series T6 lower receiver is outfitted with a Rear 1913 Rail Section to attach any 1913 Rifle Stock or Pistol Brace. This lower also includes our proprietary Ambidextrous magazine release, Ambidextrous bolt catch/ release lever, our dimpled take down and pivot pins and an installed milspec magazine release assembly.See more videos here: https://kitbadger.com/ And find Kit Badger products here: https://kitbadger.com/shop/ Ballistic Ink T-Shirts: https://ballisticink.com/...January 27, 2020. Join the Conversation. At the 2020 Shooting, Hunting and Outdoor Trade (SHOT) Show Brownell’s unveiled a pair of new lower receivers for the BRN-180 upper receiver. The BRN-180 is forged and resembles the classic profile of the Armalite AR-180 and the BRN-180M is a modernized billet version. BRN-180 forged lower receiver.A piston-driven AR-15 style upper receiver chambered in 7.62x39, compatible with mil-spec AR-15 lowers. Features adjustable gas system, retaining handguard, and 16" barrel with …Nylon Bumpers for BRN-180™. 10 Reviews. $5.99. Charging Handles MODS for the Brownells® BRN-180™. Simple fix that feels 10x better then factory, and does not mess with the original function of the factory handle!Brownells BRN-180. Today I take a 1st Look at the New Brownells BRN-180. A retro clone of the original AR-18 from ArmaLite. This particular model has a 10.5″ 5.56 barrel and uses a short stroke piston system, which alleviates the need for a buffer tube. This opens the option up for folding stocks and braces, such as the New SB Tactical TF1913.The BRN180 fits my roll for more of a toy. Its super fun suppressed and is very light weight but in terms of trust my life too there's better short stroke gas piston rifles to choose from. Like Reply. erslll. Hermiston OR. Messages 1,171 …This new upper is built with a 10.5 inch barrel that includes industry standard for .30-cal 5/8 x 24 tpi threads. The BRN-180 SH’s gas system includes three settings, suppressed, unsuppressed ...BRN 180S Gen2 Upper. The BRN 180S Gen2 complete upper is chambered in .300 AAC Blackout. A collaboration between Brownell’s, PWS, and FM Products, it is a modernized weapons system inspired by the Armalite AR-180. Brownell’s offers a dedicated lower that goes with the upper but for the purposes of this review, I did not get it.I think the appeal of an ar-180 now is just the historical and design aspect (this is missing half of the ar-180 design since it uses an ar15 lower). I said earlier you can still relatively easily get a legit AR-180 for around $1200-1300 (a tiny bit above the cost of a BRN-180 upper on a cheap $200 lower). So the only appeal to this is simply ...In this episode of TFBTV, @JamesReeves is at IWA 2023 visiting the Brownells booth to see the newest addition to its BRN-180 lineup, the BRN-180SH. According... The BRN-180 is a short-stroke gas piston design based on Eugene Stoner’s AR-180. It comes in various caliber and barrel length options and shares some parts compatibility with the AR-15. The BRN-180 upper receiver will work on any Mil-Spec AR-15 lower receiver adding to its versatility. Good morning Quartz readers! What to watch for today Toshiba’s top executives resign amid an accounting scandal. CEO Hisao Tanaka and his predecessor Norio Sasaki, now the electron...The MSS is designed to seamlessly integrate with the BRN 180, providing a stable and reliable foundation for your shooting setup. Easily integrated with any standard Mil-Spec lower receiver. Crafted with precision and attention to detail, the MSS is made from high-quality materials, including aerospace-grade 6061 aluminum, to ensure durability ...The major element that makes the BRN-180 a wonderful thing is that it allows a folding stock with no fuss or BS solutions like some of the harebrained fixes I’ve seen …Yeah, the original gun on which it was based had thrift as an impetus to creation, but if you expect the BRN-180S Gen2 to be cheaply made and of poor quality, guess again. This is a well-made ...This new upper is built with a 10.5 inch barrel that includes industry standard for .30-cal 5/8 x 24 tpi threads. The BRN-180 SH’s gas system includes three settings, suppressed, unsuppressed ...BRN 180 (18.5 in.) What caught me off guard and took me by complete surprise was the BRN-180 upper receiver group (“URG.”) Initially offered only with a 16″ barrel, it intrigued me because of the 21st-century adaptation to the AR-180 approach Brownells took to its design, adding a free-float M-LOK rail and modern surface …As soon as our BRN-180® upper receiver with the 13.9" barrel came out, Brownells Gun Tech™ Caleb Savant had to get his hands on one because it's the best AR-...For over 85 years, shooters, professional gunsmiths, hobbyists, military/law enforcement armorers, hunters, and gun tinkerers have turned to Brownells for high-quality guns, gun parts, ammunition, and optics.The stand-alone mod S.T.A.L.K.E.R. Anomaly aims to be the most stable and customizable experience for fans of the S.T.A.L.K.E.R. games. It's powered by the Monolith 64-bit engine, a custom fork of the X-Ray engine. Add addon BRN-180 …BRN180 is amazing and also a little heavy. ARIC I don't have, but if you get it, you're looking at around $600ish drop as a result of needing to use their own charging tech, the LAW Folder. That's kind of what's keeping me away. That and the fact that it's massively weighted being the folder mech is steel. If I were you, I'd get the Jackl.A BRN-180 upper includes (E), (G), and (I) and therefore the gun as a whole would qualify as an assault weapon under (iv) since it would be a semiautomatic, centerfire rifle that takes detachable magazines and has one or more features from the list (A) through (I). Reply. Impossible-Throat-59.Muzzle threads: 1/2"-28 tpi (.223) and 5/8"-24 tpi (300 BLK & 7.62x39) The BRN-180 and BRN-180S Gen2 upper receivers are available chambered in .223 Wylde (optimized for both .223 Remington and 5.56 NATO ammo), …The barrel is nitride coated and chambered in .223 Wylde with a 1:8 twist, giving the BRN-180 the ability to accurately and safely shoot all modern loadings. Classic features of the …GRINNELL, Iowa (March 6, 2023) – Brownells unveiled the BRN-180SH complete upper – the newest addition to the popular BRN-180 line – announcing it at the IW ... Brand new BRN-180, .223. 16 inch. Stovepipes every 10-15 rounds. Pretty bad, marring of the metal on my receiver where the bolt is slamming brass into the receiver. took factory grease off, and oiled everything before shooting it as well. Shot on unsuppressed. Mar 31, 2020 · Under the BRN-180S’ handguard is a 10.5-inch, 4150 steel barrel with a nitride finish. It’s chambered in .223 Wylde, which works great with both 5.56 NATO and .223 Remington, and has a 1:8 twist rate. Image courtesy Brownells. At the muzzle is a replica of the AR-180’s three-prong flash hider. A reflex sight is the best kind for the BRN-180 (Josh Wayner for TTAG) Heat buildup is something that is a challenge for this rifle and can rob accuracy quite quickly, although the receiver itself stays clean and cool. This makes reliability exceptional in that the operating parts never get clogged or caked in carbon.GRINNELL, Iowa (March 6, 2023) – Brownells unveiled the BRN-180SH complete upper – the newest addition to the popular BRN-180 line – announcing it at the IWA Outdoor Classics show in Nuremberg, Germany.. Chambered in 300 Blackout, the BRN-180SH has 10.5” barrel with 5/8-24 muzzle threads, and a gas system with three settings …What is brn180? Brownells 180 BRN-180 rifle Complete Upper Receiver is inspired by the Armalite AR-180 of the 1960s. Developed as a successor to the original AR-15, the AR-180 was a civilianized version of the AR-18, itself an upgrade on the M16 platform. The BRN-180 incorporates many of the AR-18/AR-180 improvements – including its robust ...Brand new BRN-180, .223. 16 inch. Stovepipes every 10-15 rounds. Pretty bad, marring of the metal on my receiver where the bolt is slamming brass into the receiver. took factory grease off, and oiled everything before shooting it as well. Shot on unsuppressed.That venting port adds a bit of noise, so the Brownells BRN-180SH, even on single shot, is not as quiet as the Hush Puppy nickname would indicate. The BRN-180SH upper receiver assembly has an MSRP of $999.99, but currently Brownells has them on sale for $899.99. The BRN-180 forged stripped lower receiver I used is $99.99.The Brownells BRN-180™ upper receiver generated a ton of buzz when it was unveiled at SHOW Show 2019. Now, Brownells director of product development Paul Lev...A reflex sight is the best kind for the BRN-180 (Josh Wayner for TTAG) Heat buildup is something that is a challenge for this rifle and can rob accuracy quite quickly, although the receiver itself stays clean and cool. This makes reliability exceptional in that the operating parts never get clogged or caked in carbon.The major element that makes the BRN-180 a wonderful thing is that it allows a folding stock with no fuss or BS solutions like some of the harebrained fixes I’ve seen …The core operating system of the popular BRN-180 with new straight charging handle, fits standard AR-15 lower receivers. Based on the 16" BRN-180 Gen2, the BRN-180 Sport foregoes the ejection port cover allowing for the use of a straight charging. This arrangement allows for a slimmer profile on the ejection port cover side and avoids… Read More …Brownells BRN-180. Today I take a 1st Look at the New Brownells BRN-180. A retro clone of the original AR-18 from ArmaLite. This particular model has a 10.5″ 5.56 barrel and uses a short stroke piston system, which alleviates the need for a buffer tube. This opens the option up for folding stocks and braces, such as the New SB Tactical …Weight: 4.65 lbs. BRN-180 Upper Receiver Group Gen2 – Reliable Piston System Made Even More Versatile. Designed in conjunction with PWS & FM Products, the Brownells BRN-180 Complete Upper Receiver is inspired by the Armalite AR-180 of the 1960s. Developed as a successor to the original AR-15, the AR-180 was a civilianized version of …Based upon the original AR-180 design from Gene Stoner and the Armalite crew, the BRN-180 series from Brownells is setting the black rifle world on fire. We’ve just recently completed our build, and now we finally have our official SOTG review of the BRN-180 out to the public. The Brownells BRN-180S; a faithful tribute to the AR-180.BRN 180 (18.5 in.) What caught me off guard and took me by complete surprise was the BRN-180 upper receiver group (“URG.”) Initially offered only with a 16″ barrel, it intrigued me because of the 21st-century adaptation to the AR-180 approach Brownells took to its design, adding a free-float M-LOK rail and modern surface …27 May 2023 ... Finally got this build completed!! Thanks to Brownells, Strike Industries, Rifle Supply, Huxwrx, Primary Arms, Juggernaut Tactical for the ...BRN 180 (18.5 in.) What caught me off guard and took me by complete surprise was the BRN-180 upper receiver group (“URG.”) Initially offered only with a 16″ barrel, it intrigued me because of the 21st-century adaptation to the AR-180 approach Brownells took to its design, adding a free-float M-LOK rail and modern surface treatments to the ... But first, let's run down the list of goodies on Caleb's new BRN-180 "hotness": (1) Vortex flash hider permanently pinned and welded to the 13.9" barrel to achieve the NFA-required minimum 16" barrel length. Keeps the rifle's overall length as short as possible, with no need to register the gun as an SBR or build it as a pistol. The 16"" or 18.5” barrel is machined from extra-strong 4150 carbon steel, with a hard Nitride finish that really resists surface wear. The BRN-180™ is chambered in .223 Wylde - for extra flexibility in ammo choice - with 1-8"" rifling, so it handles both .223 Remington and military-type 5.56mm NATO ammo with equal aplomb.Shop for Brownells BRN-180 Uppers at Brownells!According to Brownells Press Release: Brownells unveiled the BRN-180SH complete upper – the newest addition to the popular BRN-180 line – announcing it at the IWA Outdoor Classics show in Nuremberg, Germany. Chambered in 300 Blackout, the BRN-180SH has 10.5” barrel with 5/8-24 muzzle threads, and a gas system with three settings ...Feb 26, 2023 · Looking for a concealed carry holster? Visit our friends at Vedder Holsters! https://tacticalhyve.com/recommends/vedder/home-5/Retired Navy SEAL "Coch" talks... The Brownells BRN-180M® Lower Receiver is specifically designed to pair up with the BRN-180® Upper Receivers to maximize the full potential of this unique line. While designed to be fully compatible with Mil-Spec lower …0:00 Brownell’s BRN-180 Tabletop Review and Field Strip0:25 Some Backstory2:39 The BRN-1805:22 Field StripPiston Advantage Video: https://youtu.be/NufKhJFirF...In this episode of TFBTV, @JamesReeves is at IWA 2023 visiting the Brownells booth to see the newest addition to its BRN-180 lineup, the BRN-180SH. According...The BRN-180 has almost been on the market for 4 years now. Here I go through my experience with the BRN-180 summarizing the issues I had, communications with...Luckily the BRN180 has an integrated trigger guard. Reply. Leave a ReplyCancel reply - Advertisement - EDITOR PICKS. AR10. skywalkermix-September 18, 2023. Unboxing: Streamlight TLR-1 HL Weapon Mount Tactical Flashlight Light 800 Lumens with Strobe. Pablitto Coldblooded-May 9, 2019.r/ar15. 1.4K votes, 84 comments. 313K subscribers in the ar15 community. Welcome to r/AR15! Share you builds, ask relevant questions, play nice etc.What is brn180? Brownells 180 BRN-180 rifle Complete Upper Receiver is inspired by the Armalite AR-180 of the 1960s. Developed as a successor to the original AR-15, the AR-180 was a civilianized version of the AR-18, itself an upgrade on the M16 platform. The BRN-180 incorporates many of the AR-18/AR-180 improvements – including its robust ...27 May 2023 ... Finally got this build completed!! Thanks to Brownells, Strike Industries, Rifle Supply, Huxwrx, Primary Arms, Juggernaut Tactical for the ...The BRN-180 chambered in 350 Legend ready to hunt!. Fully self contained Upper Receiver Group, requires no messing with new buffers or recoil springs.The delta variant spreads much faster than other Covid-19 strains—and scientists may now know why. The delta variant spreads much faster than other Covid-19 strains—and scientists ...The BRN-180S® shares a large chunk of components with the BRN-180® but introduces key features to improve reliability and usability in a short configuration. With an entirely …Thank you to @brownells for sponsoring this channel! Xidax (My Computer Sponsor) - https://mbsy.co/xidax/99898713Aventon Bikes - …The BRN-180 chambered in 350 Legend ready to hunt!. Fully self contained Upper Receiver Group, requires no messing with new buffers or recoil springs.Slim and Compact Design. The BRN-180 Folding Stock folds effortlessly to the shooter’s left, making it a breeze to transition to a more compact and travel-friendly size. When folded, its slim design adds minimal width to the firearm, ensuring it remains out of the way during storage or while firing from the folded position.By Luth AR June 12, 2020. Modern AR-180: The Brownells BRN-180 System. American Rifleman by B. Gil Horman – Thursday, June 11, 2020. Brownells, one of the country’s top shooting-components providers, has been a longtime supporter of this country’s enthusiasm for AR-pattern rifles. When I built a direct gas-impingement operated AR-15 at ...6 Apr 2022 ... Merch! https://www.ballisticink.com/product-category/autumns-armory/ Treats! https://www.trytreats.com?aff=311 Coupon Code: AUTUMNSARMORY ...25 Jan 2022 ... In this episode of SHOT Show 2022 coverage, Hop is at Brownells to talk about the newest addition to the BRN-180 line, which is a 7.62x39mm ...Thank you to @brownells for sponsoring this channel! Xidax (My Computer Sponsor) - https://mbsy.co/xidax/99898713Aventon Bikes - https://bit.ly/2ZdwX4gSDI - ...Slim and Compact Design. The BRN-180 Folding Stock folds effortlessly to the shooter’s left, making it a breeze to transition to a more compact and travel-friendly size. When folded, its slim design adds minimal width to the firearm, ensuring it remains out of the way during storage or while firing from the folded position.January 27, 2020. Join the Conversation. At the 2020 Shooting, Hunting and Outdoor Trade (SHOT) Show Brownell’s unveiled a pair of new lower receivers for the BRN-180 upper receiver. The BRN-180 is forged and resembles the classic profile of the Armalite AR-180 and the BRN-180M is a modernized billet version. BRN-180 forged lower receiver.Description. The BRN-180 line of bufferless upper receivers was designed to mimic the original AR-180/AR-18 with it's right-side offset and reciprocating charging handle. While some may appreciate the period-correct look and function of the charging handle, a lot of people prefer a more modern option. A3 Tactical has come up with various ...Brownells Gen2 BRN-180 AR-15 COMPLETE Upper 16" AR15 5.56 Wylde BRN180 by PWS. BRN-180™ Upper Receiver Group Gen2 – Reliable Piston System Made Even More Versatile. Designed in conjunction with PWS & FM Products, the Brownells BRN-180™ Complete Upper Receiver is inspired by the Armalite® AR-180 of the 1960s. Developed …Still mounting to any standard AR-15 spec lower receiver, the new BRN-180SH Suppressor Optimized Upper Receiver notably includes a gas shutoff setting. This is not uncommon on piston driven firearms, it has rarely been utilized as a true “single shot” setting. Combined with the adjustable charging handle, which can be pointed downwards like ...Neither will work with a standard AR-15 upper because they aren’t designed to accept a buffer tube, though the BRN-180 upper can be installed on a standard AR-15 lower. The BRN-180M can be had (when in stock) for $149.99 while the BRN-180 comes in at $129.99. The BRN-180 is tons of fun to shoot.The BRN 180 is a short-stroke gas piston gun, which is quite robust and reliable. The bolt and bolt carrier are replicated identically from the AR 18/180 series. The bolt and bolt carrier rides on two guide rods that are equipped with return springs. The guide rods are captured in a rear steel plate.PNW. Dec 21, 2022. #2. BRN-180. It's a ground up system, not a conversion. I think there is a perception that the BRN-180 is cheap because it is sold as a Brownells house brand product. It's actually made by PWS. Mine is excellent, most piston conversions are not.The Gen2 BRN-180 350 Legend Upper. Inspired by Eugene Stoner's AR-18/180 design, the BRN-180 series of uppers were developed by Brownells in conjunction with Primary Weapon Systems and Foxtrot Mike Products. Like other members of this series, this version of the Gen 2 BRN-180 upper employs a short-stroke gas-piston …Aug 25, 2023 · Brownells continues to expand its BRN-180 offerings with the addition of new barrel lengths. Those new models have either a 14.5 or 13.9-inch barrel. This is excellent news for people who like pinned and welded muzzle devices. Most shooters know that the minimum legal rifle barrel length is 16 inches. Yeah, the original gun on which it was based had thrift as an impetus to creation, but if you expect the BRN-180S Gen2 to be cheaply made and of poor quality, guess again. This is a well-made ...Brownells continues to expand its BRN-180 offerings with the addition of new barrel lengths. Those new models have either a 14.5 or 13.9-inch barrel. This is excellent news for people who like pinned and welded muzzle devices. Most shooters know that the minimum legal rifle barrel length is 16 inches. Description. Everything that makes the BRN-180 300 Blackout great, with enhanced features for suppressor use. With the BRN-180S 300 Blackout being frequently used in conjunction with suppressors, Brownells sought out new features that make the platform quieter and better to use with a suppressor. Still mounting to any standard AR-15 spec lower ... 0:00 Brownell’s BRN-180 Tabletop Review and Field Strip0:25 Some Backstory2:39 The BRN-1805:22 Field StripPiston Advantage Video: https://youtu.be/NufKhJFirF...Yes, the BRN-180® upper receiver is fully compatible with any standard, mil-spec AR-15 lower receiver. The 16" or 18.5” barrel is machined from extra-strong 4150 carbon steel, with a hard Nitride finish that really …0:00 Brownell’s BRN-180 Tabletop Review and Field Strip0:25 Some Backstory2:39 The BRN-1805:22 Field StripPiston Advantage Video: https://youtu.be/NufKhJFirF...Mp5dude804. Took the sbr jakl and brn180 out earlier to do a comparison. The brn180 is of course retro sexy but the jakl is softer recoil wise. Both great guns and neat concepts. I'd recommend both.BRN 180 (18.5 in.) What caught me off guard and took me by complete surprise was the BRN-180 upper receiver group (“URG.”) Initially offered only with a 16″ barrel, it intrigued me because of the 21st-century adaptation to the AR-180 approach Brownells took to its design, adding a free-float M-LOK rail and modern surface …For more information or to place an order, call 800-741-0015 or visit Brownells.com. Stay up-to-date with Brownells on YouTube, Facebook, Twitter and Instagram. When fired with a suppressor ...The dual recoil springs help soak up recoil and make the BRN-180 a smooth shooter. The BRN-180 is a bit different than a standard AR 15. It’s also proven to be a very capable and accurate rifle ...Well, Brownells has replicated (and improved) it with its AR-180 upper receiver group: the BRN 180. After designing the AR-10 and witnessing its descendants’ successful adoption by the U.S. military, ArmaLite and Eugene Stoner decided to take another run at the large-frame automatic rifle. Work began on the AR-16.
The Nitride bolt replicates the original AR-180 bolt design, right down to its use of a standard AR-15 extractor. The barrel is machined from extra-strong 4150 carbon steel, with a hard Nitride .... Winco roseville
Brownells continues to expand its BRN-180 offerings with the addition of new barrel lengths. Those new models have either a 14.5 or 13.9-inch barrel. This is excellent news for people who like pinned and welded muzzle devices. Most shooters know that the minimum legal rifle barrel length is 16 inches.Description. The BRN-180 line of bufferless upper receivers was designed to mimic the original AR-180/AR-18 with it's right-side offset and reciprocating charging handle. While some may appreciate the period-correct look and function of the charging handle, a lot of people prefer a more modern option. A3 Tactical has come up with various ...January 27, 2020. Join the Conversation. At the 2020 Shooting, Hunting and Outdoor Trade (SHOT) Show Brownell’s unveiled a pair of new lower receivers for the BRN-180 upper receiver. The BRN-180 is forged and resembles the classic profile of the Armalite AR-180 and the BRN-180M is a modernized billet version. BRN-180 forged lower receiver.BRN-180 and BRN-180S are upper receivers that use a short stroke gas piston system and can be fired with a folding stock. They are chambered in .223 Wylde, .300 Blackout, 7.62x39mm, and 350 Legend, and have a Picatinny/M-LOK handguard and a 3-prong flash hider.Description. BRN180S Gen 2 10.5" 300BLK Piston Gen2 Complete Upper Receiver by PWS & Brownells AR15 Blackout BRN-180. BRN-180S™ Gen2 – Now with 300 Blackout Configuration! Designed in conjunction with PWS & FM Products, the Brownells BRN-180S™ Complete Upper Receiver is the newest iteration of the BRN-180™ Upper Receiver, which was ...Any BRN-180 upper will fit any Mil-spec lower and allows the user a reasonably priced piston upper. The piston upper has some advantages over a Direct Impingement gun, one of the most obvious is ...Full review of the Brownells BRN-180 upper that works on AR-15 lowers. We do some accuracy testing, discuss how it's related to the AR-180, and what I thin...Learn about the Brownells BRN-180 upper receiver, a modern take on the classic Armalite AR-18/180 rifle. Find out its features, pros and cons, and how it fits on an AR-15 lower.Jan 27, 2020 · January 27, 2020. Join the Conversation. At the 2020 Shooting, Hunting and Outdoor Trade (SHOT) Show Brownell’s unveiled a pair of new lower receivers for the BRN-180 upper receiver. The BRN-180 is forged and resembles the classic profile of the Armalite AR-180 and the BRN-180M is a modernized billet version. BRN-180 forged lower receiver. Brn-180 for sale and auction. Buy a Brn-180 online. Sell your Brn-180 for FREE today on GunsAmerica!Yes, the BRN-180® upper receiver is fully compatible with any standard, mil-spec AR-15 lower receiver. The 10” barrel is machined from extra-strong 4150 carbon steel, with a hard Nitride finish that really resists surface wear. This BRN-180S™ is chambered in 300 Blackout for extra flexibility in ammo choice - with 1-8" rifling.Watch this video for tips on how to prepare and paint a garage floor to improve the look of your garage and make it easier to keep clean. Expert Advice On Improving Your Home Video...Indices Commodities Currencies StocksBrownells Gen2 BRN-180 AR-15 COMPLETE Upper 16" AR15 5.56 Wylde BRN180 by PWS. BRN-180™ Upper Receiver Group Gen2 – Reliable Piston System Made Even More Versatile. Designed in conjunction with PWS & FM Products, the Brownells BRN-180™ Complete Upper Receiver is inspired by the Armalite® AR-180 of the 1960s. Developed …If you didn’t receive the tax refund you were expecting, it’s possible that’s because you’ve missed payments on your USDA mortgage, which is a federal loan that the government expe...If you are going to use a standard AR lower, you need to purchase a plug for the buffer tube area. I bought the KAK with a flange. You need the flange to hold in the takedown pin detent and spring like a typical endplate would do on a buffered lower. So …Any BRN-180 upper will fit any Mil-spec lower and allows the user a reasonably priced piston upper. The piston upper has some advantages over a Direct Impingement gun, one of the most obvious is ...The Gen2 BRN-180 350 Legend Upper. Inspired by Eugene Stoner's AR-18/180 design, the BRN-180 series of uppers were developed by Brownells in conjunction with Primary Weapon Systems and Foxtrot Mike Products. Like other members of this series, this version of the Gen 2 BRN-180 upper employs a short-stroke gas-piston system to cycle the action..