Paul Levy from Brownells introduces the BRN-180 Gen2 upper receivers, highlighting significant functional improvements over the original. Key updates include a universally adjustable gas system for optimized performance with various ammunition and suppressors, and a strengthened, simplified handguard attachment secured by a single screw. The BRN-180S Gen2 and a new .300 Blackout variant are also detailed, showcasing enhanced modularity and performance tuning.
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