Glock G40 Gen4 MOS 10mm Long-Slide Pistol – 6.02" Barrel, 15+1 Capacity, Austrian Made
The Glock G40 Gen4 MOS pairs a hard-hitting 10mm chambering with Glock’s longest 6.02-inch barrel, delivering maximum sight radius and velocity in a factory Modular Optic System configuration. This full-size, long-slide pistol ships with three matching-serial components and retains the rugged Safe Action striker-fired design that has made Glock a mainstay for hunters, competitors, and defensive shooters.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent – Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling – Sharp lands and grooves.
Specific Condition Notes: Minimal marks from previous handling; the bore is bright and clean.
What’s Included
- Glock factory hard case (black)
- Glock factory owner’s manual
- 3 x 15-round Glock polymer magazines (floorplates marked “GLOCK 1322-02”)
The G40 is the longest-slide production Glock, introduced in 2015 to give 10mm shooters a factory option with a 6.02-inch barrel. The extended sight radius aids precision, while the added barrel length squeezes more velocity from 10mm loads.
This Gen4 version benefits from Glock’s Modular Optic System (MOS) slide, allowing direct mounting of popular miniature reflex sights via interchangeable adapter plates. The slide’s matte nitride finish resists corrosion and wear.
Austrian AT proof marks and three-point matching serial numbers on the slide, barrel, and frame confirm factory originality. The polymer frame incorporates interchangeable backstraps (not included) and an integral rail for lights or lasers.
Glock’s Safe Action triple-safety mechanism, striker-fired trigger with safety tab, and adjustable polymer rear sight round out a package ready for hunting, competition, or backcountry defense.




