DealThis complete upper features:16" length Heavy Barrel.Chromemoly vanadium barrel with magnesium phosphate finish.1 in 10" twist rateM4 Feed ramps.Picatinny Railed Front Gas Block .750 diameter under gas block.A2 Flash Hider 5/8 - 24 Thread.Forged upper receiver.Includes Bolt carrier group and charging handle. from White River Armory (Product 7.62 x 36 16" PK) |