Glock G40 Gen4 MOS 10mm Long-Slide with Trijicon Red Dot and KKM Extended Stainless Barrel, 3x 10-Round Mags, Case & MOS Plates
This Glock G40 Gen4 MOS stands out as a long-slide 10mm Auto configured with a Trijicon miniature reflex sight and a KKM Precision extended stainless barrel installed. It includes the original factory barrel, three 10-round magazines, the Glock MOS Adapter Set 02, and the factory case and manual. Matching serials are observed on the frame, slide, and factory barrel.
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 markings from previous handling and use are present. Please refer to the photos for additional detail.
What's Included
- Glock factory hard case
- Owner's manual
- Glock MOS Adapter Set 02 (optic mounting plates and hardware)
- Trijicon miniature reflex sight (installed)
- KKM Precision extended stainless barrel (installed)
- Glock factory 10mm Auto barrel (separate)
- Dual-captured metal recoil spring/guide-rod assembly
- Three Glock factory 10-round 10mm Auto magazines
The G40 Gen4 MOS is Glock's long-slide 10mm Auto configuration, pairing a matte nitride-finished slide with a durable polymer frame. This example features the factory MOS optics cut, an accessory rail on the dustcover, and Gen4 ergonomics with the rough-textured surface and finger grooves. The reversible magazine catch and Safe Action system are standard Gen4 elements.
A Trijicon miniature reflex sight with a dot reticle is installed on a Glock MOS adapter plate, providing a clear aiming point. The original Glock MOS Adapter Set 02 is included for plate and hardware support.
A KKM Precision extended stainless barrel is installed, measuring approximately 7 inches and extending beyond the slide. The original factory 10mm Auto barrel is included separately. Matching serials have been observed on the frame, slide, and factory barrel.
Gen4 design features include a dual-captured recoil spring/guide-rod assembly; the metal unit is included. Capacity is 10+1 with the three included factory 10-round magazines. Import and origin markings read "MADE IN AUSTRIA GLOCK, INC., SMYRNA, GA."