Front and rear sight easily installs on your P11-22 or factory P11 slide. The new P11 rear sight installs with a small set screw for a secure lock in the factory dove tails. P11-22 Conversion Kit rear sight is installed with the factory screw. The front sight can easily be installed with a drop of superglue (Included) and a rubber hammer. Upgrade your sights to these high-visibility, light capturing optic design. Please note, these sights require light to glow and do not glow in the dark.