BRN-180 by Brownells
This review of the Brownells BRN-180 upper receiver and BRN-180M lower receiver highlights its modern interpretation of the AR-180 piston-driven platform. The reviewer details its compatibility with AR-15 lowers, its performance with suppressors, and provides extensive accuracy data for both 5.56 NATO and 300 Blackout calibers. Key features like the M-LOK handguard and compatibility with folding braces are discussed, alongside minor criticisms like the charging handle design.













