NOTE: There are 2 set screws in the sight body:
- The forward set screw helps retain the sight once fully installed. We recommend de-greasing the sight body threads, as well as the set screw threads and applying a drop of “blue” loctite only.
- The rearward set screw is to arrest the “harmonics” that occur in all over-hung rear sights. The rear set screw MUST BE LOCTITED using “red”, high strength loctite. Failure to do this can result in a fracture and eventual failure of the sight. We will not warranty the sight if the rear set screw has not been loctited. Simply tighten this second set screw until it seats firmly on the top of the slide.