From everyday carry to duty use to home defense, the Glock 23 V MOS delivers enhanced ergonomics, optic-ready capability, and proven reliability in a compact .40 S&W platform. The MOS (Modular Optic System) slide is precision-machined to provide a mounting system for popular red dot optic sights. With multiple adapter plates (sold separately), you can quickly and easily mount miniature red dot sights for faster target acquisition and more precise shot placement. The MOS system allows you to mount your preferred optic without the need for custom slide milling, maintaining the factory warranty and structural integrity of the slide. The 4.02" Glock Marksman Barrel features enhanced rifling that delivers improved accuracy over previous generation barrels. The compact 4.02" barrel and overall length of 7.28" strike the ideal balance between concealability for everyday carry and shootability for accurate shot placement. The nDLC (diamond-like carbon) finish provides superior corrosion and scratch resistance. The SAFE ACTION System provides three independent mechanical safeties that disengage sequentially as the trigger is pulled and automatically re-engage when released-total reliability with no external levers to snag or forget. .40 S&W with 10+1 capacity 4.02" Glock Marksman Barrel Enhanced rifling for improved accuracy MOS optic-ready system Precision-machined slide for red dot mounting Accepts popular miniature red dot sights (adapter plates sold separately) Front serrations for press checks Ambidextrous slide stop levers Flared magwell for faster reloads No finger grooves for universal fit Reversible magazine catch nDLC finish for corrosion resistance SAFE ACTION System with three independent safeties Compact size for versatility Includes (3) 10-round magazines