Bushmaster AR15 Upper Parts Kit Black

Bushmaster AR15 Upper Parts Kit Black. 56/308 Forward Assist Plunger 5.56/308 Forward Assist Roll Pin 3/32 x 5/8 What firearm models does the manufacturer say Bushmaster AR15 Upper Parts Kit is compatible with? The manufacturer suggests that Bushmaster AR15 Upper Parts Kit is compatible with AR-15Bushmaster 00-50086-BLK: AR15 Upper Parts Kit Black