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Quick Look

The Glock 40, introduced in 2015, was designed for long-range precision with a 6-inch barrel. It combines Glock's signature reliability with enhanced accuracy for competitive shooting. This model has gained popularity among precision shooters and law enforcement marksmen.

Why It's a Top Choice

Outstanding long-range accuracy with a 6-inch barrel
Maintains Glock's renowned reliability under diverse conditions
Optics-ready slide for modern sighting options
Compatible with .45 GAP ammunition for power and control
Ergonomic grip design for enhanced shooter comfort

Key Variants

Glock 40 MOS — Optimized for optics with mil-spec MOS cuts.

Glock 40 Gen4 — Features improved grip texture and interchangeable backstraps.

Glock 40 Gen5 — Enhanced trigger and ambidextrous slide stop for modern shooters.

Competitor Comparison Table

Feature	Glock 40	Sig Sauer P320 X5	Springfield XD-M Elite
MSRP	$599	$849	$749
Capacity/Size	15 rounds, 6-inch barrel	17 rounds, 5-inch barrel	19 rounds, 5-inch barrel
Weight	27.69 oz	32 oz	29 oz
Optics-Ready	Yes (MOS models)	Yes	Yes
Trigger Type	Safe Action Striker	Striker-fired	Striker-fired
Notable Pro	Proven accuracy at extended range	Modular grip and caliber options	Ergonomic grip with excellent controls
Notable Con	Limited caliber to .45 GAP	Higher MSRP than Glock 40	Slightly heavier than competitors

Best Use Cases

Precision self-defense
Competition shooting at long range
Law enforcement duty handgun
Target shooting and range practice
Collectors focused on Glock variants

FAQs

Can I use standard .45 ACP ammo in the Glock 40?

No, the Glock 40 is chambered for .45 GAP only. Using .45 ACP is not compatible and may cause malfunctions or damage.

What is the difference between Glock 40 Gen4 and Gen5 models?

Gen5 adds an improved trigger, ambidextrous slide stop, and no finger grooves. Gen4 features interchangeable backstraps for grip customization.

How does the Glock 40 perform with optics?

MOS variants have factory-cut slides for popular optic mounts, enhancing aiming speed and precision.

GLOCK 40 for Sale