The Glock - G34 Gen 5 MOS FS features an extended barrel and greater slide dimensions, making it a favorite among sport shooting competitors. The Gen 5 Glock 34 is a Modular Optic System (MOS) featuring a patented modular interface system for small-sized optical sights on the slide. The G34 Gen 5 FS has the classic Glock modified Browning cam locking system, it incorporates the Company's signature Safe Action system and three passive mechanical safeties, which includes a trigger safety. The no finger grooves, ambidextrous slide stop levers for better versatility and control.