Brownells BRN-180


    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 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″ 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


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