< Back You are here: KB Home Targets Geometry How to How to Install the A-1519 Light Shield Print How to Install the A-1519 Light Shield PostedJanuary 31, 2018 UpdatedNovember 6, 2018 ByAmy Smith 1. Put Loctite on each set of the screws Tube of Loctite 2. Install set screws into the holes on the A-1519 target. Close up of set screw hole Using a .050 allen wrench, screw in each set screw (each screw with Loctite) Close up of set screw, flush with face plate. (Making sure the screws are flush). 3. Installing the Light Shield.