Includes: ACE Robinson Armament VEPR Receiver Block, (#AKRBV), Skeleton Stock (#AKFX(length)), 1/2 in. Recoil Pad (RP1/2), 1 1/4 in. ambi sling mount (#UM 1.25) and all hardware needed to install this stock. Requires removal of the tang on the receiver to install the AKRBV receiver block. Length of Stock is measured from the back edge of the receiver block to the end of the stock butt, with recoil pad installed. Fixed stock kit does not include Folding Mechanism (#FSM).