Burris' Picatinny Protector Mount has a simple design which protects any of the FastFire sights from impact. It is compatible with any Weaver or Picatinny-style base for easy mounting.This simple design protects any of the FastFire sights from impact. It's affordable and effective, for even severe-duty applications. The picatinny protector mount fits any weaver or picatinny-style base for easy mounting on pistols, rifles, or shotguns. Features: Protects any FastFire sight from impact or abuse Use when mounting a FastFire on pistols, rifles or shotguns, for extra protection and peace of mind Fits Weaver or Picatinny style base