The Glock 17 Gen5 MOS builds on the excellence of the Gen5 model by incorporating the Modular Optic System (MOS), allowing for streamlined mounting of optical sights. The slide is precisely machined to accommodate various optic sights using multiple adapter plates, facilitating the easy attachment of miniature red dot sights. This model retains all the key Gen5 features, including the advanced Glock nDLC surface finish known for its exceptional hardness and corrosion resistance. The Gen5 frame offers high traction with a customizable grip through the Glock Modular Backstrap System (MBS). It also includes a quickly reversible magazine catch, ambidextrous slide stop lever, and the renowned Glock Safe Action System for reliable operation. High visibility orange magazine followers enhance ease of use. The Gen5 MOS model combines these enhancements with front slide serrations for improved manipulation, making it a versatile and high-performing choice for users seeking both traditional reliability and modern optical compatibility.