Glock G40 Gen4 MOS 10mm Long Slide, 6.02 in Barrel, 15+1 Capacity, Austrian-Made — Excellent
The Glock G40 Gen4 MOS is a factory long-slide 10mm with a 6.02 in barrel and an 8.31 in sight radius, offering the extended configuration of the Gen4 series. This discontinued model includes the Glock MOS optics interface with the cover plate installed and ships with the MOS Adapter-Set 02. It comes in excellent condition and includes three factory 15-round magazines, interchangeable Gen4 backstraps, a loader, and the factory case and manual. Made in Austria with Austrian proof marks and factory polymer adjustable sights, it presents a complete, well-equipped package.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Crisp polygonal rifling.
Specific Condition Notes: There is little sign of prior use, and the firearm functions properly.
What's Included
- Glock factory hard case
- Glock MOS Adapter-Set 02 (optic mounting plates)
- Glock Gen4 Modular Backstrap System interchangeable backstraps
- Glock OEM polymer magazine loader
- Glock owner's manual
- 3x 15-round Glock factory 10mm Auto magazines
This G40 is a factory long-slide 10mm built on the Gen4 frame, featuring the Rough Texture Frame with interchangeable backstraps for grip fit. It retains the reversible magazine catch and Glock Safe Action system, and includes the Glock Universal accessory rail with a single cross-slot.
The slide is machined with the MOS cut and arrives with the cover plate installed. The pistol ships with the Glock MOS Adapter-Set 02 for mounting compatible optics. Factory sights include a polymer white-dot front and an adjustable white-outline rear with windage and elevation screws.
The nitrided steel barrel measures 6.02 in and uses polygonal rifling with a 1:9.84 RH twist. The extended slide and barrel yield an 8.31 in sight radius.
Chambered in 10mm Auto, the standard capacity is 15+1. Three factory 15-round magazines are included. The pistol is made in Austria, with Austrian proof marks on the barrel hood and frame markings reading "MADE IN AUSTRIA / GLOCK, INC., SMYRNA, GA." This model is discontinued by Glock.




