The AIM 30mm One Piece Cantilever Scope Mount is a military styled mount with simplistic operation, which is to hold your sight as well as a additional accessory on top of the rail on the mount. It drops right onto an accessory rail with a simple screw type rail attachment bracket without any tools required. Allon key is no included so please be prepared to have one ready if you wish to open the mount ring to install your sights.