Chambered in 9×19 the G48 MOS features slide cuts designed for specific micro-optics and the GLOCK Slim Mounting Rail for mounting accessories. The perfect tactical partner with increased concealability. The G48 MOS is of similar length and height as the compact size G19 but has the well-known GLOCK Slimline design with the reduced width of the pistol for perfect carrying comfort. The frame features the GLOCK Slim Mounting Rail for mounting tactical accessories and incorporates elements of the Slimline series such the short trigger distance, a frame with a built-in beavertail, a reversible magazine catch and the incredibly accurate, match-grade GLOCK Marksman Barrel (GMB) of the Gen5 series. The G48 Rail also features precision-milled front serrations.