Glock 21 V MOS, .45acp, 4.61" Barrel, 3- 13rd Magazines, Optics Ready, Pistol

Glock 21 V MOS .45 ACP Pistol, 4.61" Barrel, 13+1, Black, Optics Ready, 3 Mags

The Glock 21 V MOS combines a 4.61-inch barrel, full-size polymer frame, and optics-ready slide in a .45 ACP pistol built for serious range work and professional applications. Its appeal is straightforward: substantial gripping space, a familiar striker-fired action, and the flexibility to select a compatible red dot. For shooters who prefer .45 ACP in a modern service-size handgun, the G21 V MOS offers a focused, mission-ready configuration with practical features throughout.

This black-finished model includes three 13-round magazines, providing 13+1 capacity with a round chambered. The full-size frame gives the hands room to establish a secure hold, while the Modular Optic System opens the door to a tailored sighting setup. A black plastic case and one MOS adapter plate round out the included equipment.

Shop the Glock 21 V MOS at BattleHawk Armory and put a capable, optics-ready .45 ACP at the center of your handgun setup.

4.61-Inch Barrel and Full-Size .45 ACP Platform

The 4.61-inch Glock Marksman Barrel anchors the G21 V MOS. It pairs a service-length barrel with a full-size frame, creating a handgun with the dimensions and gripping surface many shooters prefer for structured range sessions. Chambering is .45 ACP, also known as .45 Auto.

The full-size format is a useful distinction when choosing a handgun for extended practice. Grip fit, sight visibility, and access to the controls all influence the shooting experience, and the G21 provides room to work with those priorities. Its polymer frame keeps the platform practical for regular handling, while the black finish presents a clean, understated appearance.

MOS Optics Readiness

Glock's Modular Optic System uses an adapter interface to accommodate compatible pistol optics. The slide is already configured for that system, so choosing a red dot begins with matching the optic to the correct plate. One MOS adapter plate is included. Confirm that its footprint matches the selected optic and that the mounting hardware is appropriate for the combination.

A red dot is not included. Fixed sights provide the supplied aiming system, and the MOS interface gives the pistol room to grow with your preferences. This flexibility is valuable for a shooter who wants to start with conventional sights or build an optic-equipped range setup around a familiar .45 ACP platform.

Safe Action Controls and Durable Black Finish

The striker-fired Safe Action system incorporates three passive mechanical safeties. A reversible magazine catch and ambidextrous slide stop accommodate control preferences on either side, while front slide serrations add a gripping surface. Glock's nDLC treatment supplies the durable black finish.

These details make the G21 V MOS a cohesive service-style handgun. The controls, slide features, and full-size frame work together in a layout that emphasizes consistency. The result is a specialized .45 ACP platform for shooters who value familiar operation, useful optic compatibility, and a complete three-magazine starting setup.

Included Equipment

• Glock 21 V MOS .45 ACP pistol.
• Three 13-round magazines.
• One MOS adapter plate.
• Black plastic case.

The three-magazine configuration is useful for organized range sessions, giving you the supplied capacity across a matching set. The case keeps the pistol and its basic equipment together for storage and transport.

Product Specifications

• Manufacturer: Glock
• Model: 21 V MOS
• Manufacturer Part Number: UV2150203MOS
• UPC: 764503068508
• Type: Full-size semi-automatic pistol
• Action: Striker-fired Safe Action
• Caliber: .45 ACP / .45 Auto
• Barrel Length: 4.61 inches
• Barrel: Glock Marksman Barrel
• Capacity: 13+1
• Magazines Included: Three 13-round magazines
• Frame: Polymer
• Finish: Black nDLC
• Optics Interface: Glock MOS
• Sights: Fixed
• Controls: Ambidextrous slide stop and reversible magazine catch

Frequently Asked Questions

How many magazines come with this Glock 21 V MOS?

Three 13-round magazines are included. The pistol has 13+1 capacity with one round chambered.

Does the pistol include a red dot?

No. It is optics ready through the Glock MOS interface and includes one adapter plate. Match the plate and hardware to the optic you select.

What caliber and barrel length does the G21 V MOS use?

It is chambered in .45 ACP, also called .45 Auto, with a 4.61-inch barrel.

Order the Glock 21 V MOS from BattleHawk Armory. Bring together full-size .45 ACP handling, MOS versatility, and three included magazines in one professional-grade handgun.