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" 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 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 ALPHA Series Folding Stock Shipped for rifle use, also compatible with Gear Head Works tailhook for arm brace use. Cosmetic arm brace plug sold separately to ensure back beam is smooth. Adjustable polymer cheek piece for comfortable use with all users Adjustable butt pad for increased usability with plate carriers or heavy gear. 5 position locking beam with textured button for quick changing Heavy-duty side-folding mechanism constructed from 4140 heat treated steel Compatible with firearms that include 1913 rail adaptor Full-length locking lug for maximum strength Solid positive lock up in both positions Steel clamp with large surface engagement Can be configured to right - or left-folding Features 3 QD sling attachments Curved, adjustable top surface for a comfortable cheek weld Adds 8.0” to overall firearm length Adds 0.75” to the length of the firearm in the folded position Complete assembly weight: lb 5oz. Constructed of high strength polymer, aluminum, and steel components Made 100% in the USA – lifetime warranty It is the responsibility of the purchaser to ensure that possession and use of this item is in compliance with all relevant federal, state, and municipal laws or statutes. End user is also responsible for any ATF requirements
BRN-180®: Un sistema di ricezione superiore per prestazioni affidabili e versatili
Il BRN-180® Upper Receiver Group Gen2 è progettato in collaborazione con PWS e FM Products, ispirato all'Armalite® AR-180 degli anni '60. Questo ricevitore completo rappresenta un'evoluzione rispetto all'originale AR-15, offrendo un sistema a pistone robusto e affidabile.
Caratteristiche principali:
- Compatibilità: Il ricevitore superiore BRN-180® è completamente compatibile con qualsiasi lower AR-15 mil-spec standard.
- Sistema di gas regolabile: Ora incluso, consente di selezionare due impostazioni per un funzionamento ottimale in base alle condizioni e alle munizioni.
- Guardia della mano migliorata: Fissata con una singola vite di bloccaggio per una maggiore stabilità durante il tiro prolungato.
- Canne di alta qualità: La canna da 16" è realizzata in acciaio al carbonio 4150 con finitura Nitride dura, resistente all'usura.
- Rifling: Camera .223 Wylde con passo di 1-8", compatibile con munizioni .223 Remington e 5.56mm NATO.
- Flash suppressor: Replica del flash hider a tre punte dell'AR-180, che riduce la firma di polvere durante il tiro in posizione prona.
- Peso totale: 4.65 lbs.
ALPHA Series Folding Stock:
Progettato per l'uso con fucili, compatibile anche con il Gear Head Works tailhook per l'uso come braccio di supporto. Il plug cosmetico per braccio di supporto è venduto separatamente per garantire una finitura liscia.
- Regolazione: Parte posteriore regolabile per un uso confortevole con tutti gli utenti.
- Meccanismo di piegatura robusto: Costruito in acciaio trattato termicamente 4140.
- Attacchi per slitta QD: Tre attacchi per slitta QD per una maggiore versatilità.
- Peso di assemblaggio completo: 5 oz.
- Costruzione: Realizzato in polimero ad alta resistenza, alluminio e componenti in acciaio, 100% made in USA con garanzia a vita.
È responsabilità dell'acquirente garantire che la detenzione e l'uso di questo articolo siano conformi a tutte le leggi o statuti federali, statali e municipali pertinenti. L'utente finale è anche responsabile di eventuali requisiti ATF.
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