For milled receivers. Designed to enhance the ergonomics of the mostly widely produced firearm in the world, our AK T6 collapsible stock offers many advantages over the original. This six (6) position stock fits the weapon to the operator regardless of body type or individual equipment. Both the stock body and the receiver extension are constructed of military grade composite. T6 Stocks are currently in use by many private security forces throughout the world. Will not fit Century Arms Centurion 39 AK. Old Item #TA06161B.