Glock 21 V MOS 45 ACP 13 Round – Superb 4.61 in. Pistol

Description

The Glock 21 V MOS 45 ACP 13 Round is the full size 45 Auto in the Glock line, and the pistol that made a thirteen round 45 ordinary rather than exotic. Traditional 45s of the era carried seven or eight rounds in a single stack; the G21 nearly doubled that while keeping the recoil impulse of a heavy, slow bullet in a polymer frame that soaks it up.

Glock 21 V MOS 45 ACP 13 Round Barrel, Slide and Frame

The 4.61 inch barrel is a Glock Marksman Barrel, carrying the enhanced polygonal rifling and tighter crown Glock introduced with Gen5. This is an MOS pistol, so the slide is cut from the factory for a red dot and ships with adapter plates covering the common footprints. The optic sits low enough that the supplied iron sights remain usable underneath as a backup, and no gunsmithing or warranty question is involved.

The slide wears Glock’s nDLC surface treatment, a diamond like carbon coating applied to both slide and barrel that resists corrosion and abrasion far better than the older Tenifer process it replaced. Front serrations are cut alongside the rear ones so the slide can be worked from either end for a press check. The frame carries no finger grooves, which sounds like a small thing until a shooter with hands that do not match the mould tries the older design, and a flared magazine well funnels magazines in under stress.

What the V Series Changed

The V Series is Glock’s 2025 replacement for the Gen5 line, and from the outside almost nothing has moved. Grip texture, controls, ergonomics and trigger feel carry straight across, existing holsters still fit, and the shooting experience is the Gen5 experience. The changes are internal, centred on a redesigned firing pin channel and a reinforced rear trigger housing, and they exist to make the pistol substantially harder to tamper with illegally.

One consequence matters when buying parts: V Series internals are not cross compatible with Gen3, Gen4 or Gen5 components. Magazines and most external accessories carry over, but slide internals and some aftermarket trigger parts do not. Anyone planning modifications should confirm V Series fitment before ordering.

Safe Action and Controls

Underneath sits the Safe Action system Glock has used since 1982: three passive, independently operating mechanical safeties that disengage in sequence as the trigger is pressed and reset automatically when it is released. There is no manual safety lever to remember and no decocker, which is a large part of why the platform dominates duty holsters. The slide stop lever is ambidextrous and the magazine catch is reversible, so left handed shooters are accommodated without aftermarket parts.

Specifications

• Model: G21 V MOS
• Manufacturer part number: PV2150203MOS
• Caliber: 45 Auto
• Capacity: 13+1, 10 round magazines optional
• Barrel: 4.61 in., Glock Marksman Barrel
• Action: Striker fired, Safe Action
• Overall length: 8.07 in.
• Height with magazine: 5.51 in.
• Weight without magazine: 25.93 oz
• Trigger pull: approximately 5.8 lbs
• Sights: Fixed, with MOS optic cut
• Finish: nDLC on slide and barrel
• Frame: Polymer, no finger grooves, flared magwell
• Controls: Ambidextrous slide stop, reversible magazine catch
• UPC: 764503068508

Why Buyers Choose the Glock 21 V MOS 45 ACP 13 Round

The 45 Auto argument has always been bullet diameter and a subsonic, heavy projectile that transfers energy without the sharp report of a magnum. What the G21 added was capacity and a frame that flexes slightly under recoil, so a cartridge with a reputation for punishing shooters becomes notably mild. Adding a factory optic cut brings a decades old design fully current.

The other reason is the ecosystem. No other handgun platform has the depth of holsters, sights, magazines and parts that Glock does, and buying into it means never hunting for support. Armourers everywhere know the design, and the manual of arms transfers to every other pistol in the line.

Who Should Buy It

The Glock 21 V MOS 45 ACP 13 Round suits the shooter committed to 45 Auto who wants modern capacity and a red dot, the home defender who prefers a large bore subsonic cartridge, and the handgun hunter looking for a heavy bullet platform with an optic already accounted for.

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