The Glock 48 MOS Slimline Compact has built-in beaver tail, match-grade GLOCK Marksman Barrel (GMB) and precision-milled front serrations. It features Glock's Safe Action system which provides a consistent trigger pull from the first to the last round; three automatic independently operating mechanical safeties; polymer frame with hardened steel guides; ideal grip angle and low weight. The advanced surface treatment of the slide results in optimal hardness by considerably reducing wear and tear and it makes it corrosion resistant, even when operating in saltwater conditions. MOS features a slide that is precision machined to provide a mounting system for popular optic sights. *Note- The G48 with the Modular Optic System (MOS) does not come with adapter plates. Includes Aimpoint COA 3.5 MOA red dot.