Glock G40 Gen4 MOS 10mm Auto Long Slide, 6.02 in Barrel, Adjustable Sights, 3x 15-Round Mags
The Glock G40 Gen4 MOS is a long-slide 10mm Auto configured with a 6.02 inch barrel, adjustable factory iron sights, and the MOS interface. This example is in very good condition and comes with three 15-round OEM magazines, the Glock factory hard case, the Glock MOS Adapter‑Set 02, and an installed GL‑509T MOS mounting plate. It bears Austrian proof marks and matching serial numbers on the barrel, slide, and frame.
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 - Polygonal rifling with clean, well-defined surfaces.
Specific Condition Notes: Light handling marks are present from previous use on exterior surfaces. Please refer to the photos for close-ups of these areas.
What’s Included
- Glock factory hard case
- 3x 15-round OEM Glock 10mm Auto magazines
- Glock MOS Adapter‑Set 02 (adapter plates, screws, and wrench)
- GL‑509T MOS mounting plate (installed on slide)
Built on Glock's Gen4 system, this G40 uses a dual recoil spring assembly and the Safe Action striker-fired mechanism. The polymer frame keeps weight manageable while providing an accessory rail for lights or other rail-mounted tools.
The long-slide configuration combines a 6.02 inch barrel with adjustable Glock rear and white-dot front sights. The slide features the factory MOS interface, and this pistol includes the Glock MOS Adapter‑Set 02 along with a GL‑509T plate installed on the slide.
Dimensions support confident handling: overall length is 9.49 inches, height 5.47 inches, width 1.34 inches, and slide width 1.12 inches. Weight is 32.28 ounces without a magazine. Capacity is 15+1 with the included OEM 15-round magazines.
Manufactured in Austria, the pistol shows AT and CIP proof marks along with the "MADE IN AUSTRIA GLOCK, INC., SMYRNA, GA." import stamp. The barrel, slide, and frame all share matching serial numbers. The steel barrel uses Glock's polygonal rifling.