Selected Handgun Detail

Manufacturer
	Glock Ges.m.b.H. More Info

About the Gun

The 21 V MOS is a full-size pistol chambered in .45 ACP. It features internal modifications to the slide rear plate, striker channel, and trigger housing geometry. These internal changes were introduced as part of the V-series platform in late 2025. This model maintains the established full-size dimensions, magazine capacity, and mechanical layout of prior G21 variants. The pistol uses a standard trigger shoe while retaining the Safe Action system with its three internal safeties. The slide incorporates the Modular Optic System with removable adapter plates.

Production

Production of this firearm began in 2025 and is currently ongoing.

Market value

The current MSRP for this gun is around $750. Used examples in very good to excellent condition typically fall in the $540–$620 range.

Cartridge Specifications
Cartridge:	.45 Automatic
Alias:	.45 Automatic Colt Pistol (ACP)
More Info

Analysis

The V-series designation on the 21 V MOS reflects Glock's implementation of specific internal geometry adjustments to the slide rear plate, striker channel, and trigger housing. These changes were introduced in 2025 as part of a platform-wide update aimed at regulatory compliance and reduced compatibility with certain aftermarket components. The external profile, grip dimensions, and magazine compatibility remain unchanged from previous full-size .45 ACP models. The MOS slide preparation uses the traditional adapter-plate system. This configuration positions the 21 V MOS as the optics-ready full-size .45 ACP offering in the V-series lineup. It is distinct from earlier non-V G21 models and from any Gen6 platform pistols, which incorporate different ergonomic updates and optic systems.