Instructions
Loosen the retention rings at the base of your new sight and widen the brackets on the bottom of the sight base, this can be done by hand̵2;no special tools are needed.
Position the sight as desired along the length of the pistol. You may want to place optical sights closer to the rear and laser sights closer to the front. The length of the mount rail gives you lots of options.
Place the retention screws parallel with the slots cut across the mounting base so that they are in the slots and align the sides of the bracket over the sides of the rail mount. Tighten the retention screws so that the bracket closes securely along the sides of the mount.