All Aimtech mounting systems are unique for each pistol and designed especially for the individual firearm. Many of the mounts utilize custom screws which replace existing pins or screw in the firearm to help secure the mount as well as utilizing the grip screws in most cases. All of the Aimtech pistol mounts mount on the right side of the pistol to stay clear of the slide lock levers and safeties as well as provide a better aesthetic look, (with the exception of the rail-grabber and rail-job style mounts). Parts are all extruded and then machined from heat treated aluminum alloy on CNC (computer numerically controlled) machining centers. After machining they are hand deburred and then vibratory tumbled and/or glass bead blasted before receiving a Mil-Spec anodized coating in a beautiful satin black. They are then packaged for sale in a resealable poly box. All our mounts are original and innovative, and you can't get a better mount without gunsmithing. We were the first company to bring you all of the mounts we sell and we will continue to be the innovators in mount design. Be sure and request a free catalog to see the individual aspects of each mount.