TOP STOCK OF A RIFLE SECRETS

Dimensionally the same as the conventional base cap with a 3-slot part Picatinny rail built in. The rail area is made to be parallel on the bore. CNC machined aluminum with black anodization. Remove common bottom cap and put in new bottom cap with Picatinny rail segment. (?)You may ship a firearm to oneself in case you will A further point out wher