Glock 21 V MOS Features The Glock 21 V MOS is built around a 4.61 ported barrel and matching ported slide a combination that vents gas upward to help tame muzzle rise across a full-size .45 ACP platform. The slide is cut for Glock s Modular Optics System giving the shooter a genuine option to mount a red dot sight for faster more precise target acquisition. Every visible metal surface is finished in a custom OD Green Cerakote coating giving the pistol a durable corrosion-resistant exterior along with a distinctive look. Fixed sights provide a reliable co-witness reference point when running an optic keeping the pistol usable even if the red dot ever fails. Beneath the Cerakote finish the Glock 21 V MOS retains the robust polymer frame that has made Glock pistols a mainstay for duty and defensive use delivering durability and manageable recoil control shot after shot. The pistol ships with three 13-round magazines giving the shooter ample capacity and spares for practice competition or personal defense in .45 ACP. Being made in the USA this variant continues Glock s proven engineering while adding the ported barrel and slide package as a genuine performance upgrade over a standard-production gun. It is a strong choice for shooters who want a full-size .45 ACP pistol with both optic readiness and factory recoil management already built in. Glock 21 V MOS Specifications Manufacturer: Glock Model: 21 V MOS Caliber: .45 ACP Capacity: 13+1 Barrel Length: 4.61 Barrel Description: Ported Slide Description: Ported Action: Semi-Auto Striker Fired Color: OD Green Frame Material: Polymer Sights: Fixed Optic Ready: Adaptor Plate Magazines Included: 3 Available At: GrabAGun