The H&R Retro DOE 9mm Pistol is bringing the '80s back! Styled after the original Dept. of Energy SMG, it's compatible with all Colt-style magazines, though ASC and Metalform are recommended. This pistol features the H&R "HAR-15" Pistol brace, which keeps your retro build compliant while maintaining the classic aesthetic. Features4150 Chrome Moly Vanadium Barrel1:10 Twist RateSlickside 9MM Upper ReceiverDOE/M231 Handguard with Heat Shields