With Glock starting to get into the custom market, the G17 and G19 MOS or Modular Optics System does just that. No longer will you have to send your slide out to get an RMR cut or Burris cut. Now you will have them right from the factory with 4 plates that will fit any red dot or reflex type sight. Got to say we are looking forward to reviewing these.
Shot and Edited by: Kevin Landers