PSA 16" M4 SQR 15" Premium - Blemished, Ready for Duty - With BCG & Charging Handle

16" Barrel length Chrome moly vanadium Chrome Lined bore 5.56 NATO Chamber 1:7" Twist M4 Feed ramps .750 low profile gas block A2 Flash Hider 15" SQR Rail Forged upper receiver T-Marks These uppers may have cosmetic blemishes that do not affect function. This may include, but is not limited to, forging marks under the finish, scratches, slight variation in the finish color coat.