Discover the BRN-180S Upper Receiver - The Shortest-Possible Option Without SBR Registration!
Introducing the BRN-180S Upper Receiver from Brownells, a limited production run designed for enthusiasts who seek the ultimate in performance and versatility.
Product Features:
- Limited production model of the popular BRN-180S complete upper receiver.
- Permanently pinned and welded Primary Weapon Systems FRC Rearden flash hider on a 13.9" barrel to comply with NFA regulations.
- Two benefits in one: the flash hider also serves as a quick-attach mount for sound suppressors.
- Compatible with AR-15 lowers without a buffer tube, ideal for folding stocks and adapters.
- Adjustable gas block with settings for sound suppressors and normal fire.
- Lightweight profile barrel encased by a slim M-LOK® handguard for an extremely lightweight package.
- Optimized .223 Wylde chamber for excellent performance with .223 Remington and 5.56x45mm NATO ammunition.
- Easy access for cleaning with a large ejection port.
Specifications:
- Ultra-reliable piston operating system.
- Choice of 13.9" or 14.5" Nitride finished barrel.
- Compatibility with current mil-spec AR-15 lowers.
- Machined 7075 T6 aluminum receiver & handguard with hardcoat anodized finish.
- Versatile .223 Wylde chamber optimized for both .223 Rem & 5.56 NATO ammo.
- Button rifled bore with 1-8" rifling stabilizing a broad variety of bullet weights.
- ½"-28 threaded muzzle and molded polymer ejection port cover.
CAUTION: User removal of the trunnion, barrel, and trunnion screws is not recommended. Removal of the trunnion screws will void our Forever Guarantee.
NOTE: All BRN-180® Upper Receiver Assemblies are test fired before final packaging. Your upper may display signs of firing, such as light carbon fouling inside.