This combination of our rear stock adapter and tactical padded buffer tube is easy to install. The adapter is finished in jet black anodize and the buffer tube has a black oxide finish. Completely assembled, all you have to do is install our adapter between the grip and the receiver and tighten in place using basic tools, (instructions included) Pistol tube length with adapter is 7.25". ***If you need a longer "short bolt" for an aftermarket grip, ask for one in the comments section at the end of your order, we will NOT supply both bolts. (gun & other parts sold separately)