The Glock 21V MOS delivers proven .45 ACP stopping power in a modern, optics-ready duty platform. Built on Glock's full-size frame and featuring a 4.61-inch barrel, this pistol combines legendary Glock reliability with the versatility of the MOS (Modular Optic System), making it an ideal choice for duty use, home defense, and shooters who prefer a large-caliber handgun with modern sighting options. Configured with three 10-round magazines, the Glock 21V MOS is well-suited for compliant states while retaining the shootability and control expected from Glock's flagship .45 platform. The Glock 21 has long been trusted for its balance of power, durability, and manageable recoil, and the MOS variant brings this classic design into the modern era. The factory-cut MOS slide allows direct mounting of popular red dot optics using Glock adapter plates, giving shooters faster target acquisition and improved performance in defensive scenarios. Chambered in .45 ACP, the 21V MOS offers authoritative terminal performance while benefiting from Glock's low bore axis and recoil system to maintain control during rapid fire. The full-size frame provides a solid grip and excellent balance, while the 4.61" barrel delivers consistent accuracy and dependable velocity. Finished with Glock's durable black coating and built to withstand harsh conditions, the Glock 21V MOS maintains the brand's reputation for simplicity, reliability, and long service life. Whether used as a duty sidearm, a home-defense pistol, or a range workhorse, this MOS-equipped .45 is built to perform. Specifications: Model: Glock 21V MOS Caliber: .45 ACP Barrel Length: 4.61" Action: Striker-fired Capacity: 10 rounds Magazines Included: (3) 10-round magazines Slide: MOS (Modular Optic System), optics-ready Frame: Full-size polymer frame Finish: Black Sights/Optics: MOS-compatible with adapter plates Use Case: Duty, home defense, range use, compliant-state ownership