HK

HK21 Barrel Grip Clamp

HK21 Flash Hider with C-Clip

HK21 Barrel Lever with Spring & Axis Pins

HK21 Barrel Grip Screw with Stud

HK21 Flat Head Stud with Hex Screw - 2 pk

HK21 Wedge Lock Washer - 2 pk

HK21 Barrel Grip Bracket

HK21 Retaining Push Pin Set (2 Long, 1 Short)

HK21 Barrel Grip with Insert

HK21 Complete Rear Sight Assembly

HK21 Barrel Shroud w/Charging Handle & Cocking Tube

HK21 Feed Mechanism Housing Without Retainer