Brownells brn 180

The 16″ barrel is machined from extra-strong 4150 carbon steel, with a hard Nitride finish that really resists surface wear. The Brownells 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 – hard coat 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

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