Replacement screws for the Brownells line of Glock slides. 5/16 x 4-40 TPI are used to mount your Trijicon RMR or Holosun to the Brownells RMR Glock slides. The 1/4" x 4-40 TPI can be used to mount the Brownells cover plate (078-000-413) to the Brownells RMR Glock slides. Mfg: Brownells
