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 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 and reliable gas piston operating system. (Yes, the originators of the AR-15 / M16 eventually embraced a piston!) The BRN-180® Gen2 Upper Receiver Group improves upon the original BRN-180 with two main upgrades. First, all BRN-180® Upper Receivers now ship with an Adjustable Gas System, previously only found on the BRN-180S®. The operating mechanism, the short stroke gas piston concept remains the same, but the user can select between two settings, depending on their conditions and ammunition, to ensure smooth and consistent function. No more spare gas piston cup to worry about. In addition to the new Adjustable Gas System, the Handguard is now retaining with a single locking screw. This large screw provides ample locking force and ensures a more consistent handguard lockup than the previous mechanism. During extended firing, and the barrel heating up, this new locking system ensures the handguard retains alignment and rigidity with the upper receiver. Also, with this new takedown mechanism, the handguard can be removed to access the gas system without removing the internal components. Like the original, the BRN-180® bolt carrier rides smoothly on a PAIR of guide rods. The carrier is buffered at the rear by a built-in polymer buffer with a molded-in steel plate that captures the guide rods. The Nitride bolt replicates the original AR-180 bolt design, right down to its use of a standard AR-15 extractor. Wait - we know what you're dying to ask. 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 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. Up front there's a replica of the AR-180's unusual three-prong flash hider: the hemispherical bottom prong helps prevent the muzzle blast from kicking up a dust signature when shooting prone. Standard ½-28 tpi muzzle threads let you swap on a modern AR-15 muzzle device should you be bitten by the customizing bug. Ultra-reliable AR-180 piston operating system Compatible with current mil-spec AR-15 lowers Machined 7075 T6 aluminum receiver & handguard - hardcoat anodized finish 16" or 18.5” barrel with matte black Nitride finish .223 Wylde chamber Button rifled bore; 1-8" twist ½"-28 threaded muzzle Replica 3-prong AR-180 flash suppressor Molded polymer ejection port cover Total weight: 4.65 lbs We recommend the use of C-Products Duramag and/or Unimag for best results in our 7.62x39 variant.
BRN-180® GEN 2 - En pålitelig og allsidig løsning for dine skytebehov!
BRN-180® Upper Receiver Group Gen2 – Et pålitelig stempel-system gjort enda mer allsidig. Utviklet i samarbeid med PWS & FM Products, Brownells BRN-180® Complete Upper Receiver er inspirert av Armalite® AR-180 fra 1960-tallet. Den ble utviklet som en etterfølger til den originale AR-15, og AR-180 var en sivilisert versjon av AR-18, som igjen var en oppgradering av M16-plattformen.
BRN-180® inkorporerer mange av forbedringene fra AR-18/AR-180 - inkludert sitt robuste og pålitelige gassstempel-operasjonssystem. (Ja, oppfinnerne av AR-15 / M16 omfavnet til slutt et stempel!)
Forbedringer i Gen2-modellen
- Justerbart gassystem: Alle BRN-180® Upper Receivers leveres nå med et justerbart gassystem, tidligere kun funnet på BRN-180S®.
- Håndtaket: Håndtaket er nå festet med en enkelt låseskrue, som gir bedre låsing og stabilitet under skyting.
Som den originale modellen, glir BRN-180® bolt carrier jevnt på et par guide stenger. Carrieren er dempet bak av en innebygd polymerbuffer med en formet stålplate som fanger guide stengene. Nitride-bolten reproduserer den originale AR-180 bolt-designen, helt ned til bruken av en standard AR-15 ekstraktor.
Og ja, BRN-180® upper receiver er fullt kompatibel med alle standard, mil-spec AR-15 lower receivers.
Tekniske spesifikasjoner
- 16" eller 18.5” løp maskinert fra ekstra sterk 4150 karbonstål, med hard Nitride-finish.
- .223 Wylde kammer for ekstra fleksibilitet i ammunisjonsvalg, med 1-8" rifling.
- Standard ½-28 tpi munningsgjenger for moderne AR-15 munningsenheter.
- Ultra-pålitelig AR-180 stempeloperasjonssystem.
- Vekt: 4.65 lbs.
Vi anbefaler bruk av C-Products Duramag og/eller Unimag for best resultat i vår 7.62x39 variant.
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