Selected Handgun Detail

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

About the Gun

Subcompact, polymer-framed pistol chambered in .45 GAP, built on a frame size equivalent to the G26 with a single-stack magazine for reduced width and improved concealability. It uses a locked-breech, short-recoil operating system with a polygonal rifled barrel and single-stack magazines holding 6 rounds standard (with compatibility for higher-capacity Glock 37/38 magazines in unrestricted markets). This is a Gen3 configuration, incorporating finger grooves along the front strap, thumb rests on the frame sides, and the revised Gen3 grip texture pattern; the dust cover lacks an accessory rail due to the abbreviated subcompact frame length.

Production

Production ran from 2003 to 2010.

Market value

MSRP at production was around $550–$600. Current market value for examples in very good to excellent condition ranges $500–$550.

Cartridge Specifications
Cartridge:	.45 GAP
Alias:	.45 Glock Automatic Pistol
More Info

Analysis

The Glock 39 shares consistent Gen3 mechanics adapted for the .45 GAP cartridge in a single-stack subcompact layout, demonstrating reliable durability in law enforcement backup roles, civilian concealed carry, and defensive applications where the shorter cartridge allows similar ballistics to .45 ACP in a narrower frame. Major components maintain compatibility with Gen3 G26 parts in many areas (such as frame architecture, recoil springs, and most internals), enabling interchangeability and aftermarket support with only minor differences in grip feel from the slim profile. The polygonal rifling supports reliable function with standard .45 GAP ammunition and contributes to consistent practical accuracy at typical defensive distances. The platform's subcompact dimensions and 6-round standard capacity (expandable via extended magazines) provide a balance of concealability and reduced grip width compared to double-stack .45 options, with the finger grooves and thumb rests offering ergonomic adjustments suited to the narrower grip. Aftermarket adapters are available to add a rail section for compact lights or lasers, though no factory accessory rail is present due to the frame's short dust cover. The .45 GAP chambering produces recoil similar to .45 ACP in a comparable frame mass, though the cartridge's limited adoption restricted ammunition options and broader availability compared to more common calibers. Secondary market preferences depend primarily on condition, originality, remaining finish, and individual grip fit rather than any inherent differences in mechanical performance or durability relative to other Gen3 subcompact models.