Glock G20 Gen5 MOS 10mm Auto, Full-Size, USA-Made, 4.61 in GMB Barrel, nDLC, 3x 15-Round Magazines
This U.S.-made Glock G20 Gen5 MOS is a full-size, 10mm Auto pistol featuring the Glock Marksman Barrel, durable nDLC finish, and Gen5 ergonomics. It is marked USA across the slide and frame, carries matching serial numbers on the barrel, slide, and frame, and includes three factory 15-round magazines. The pistol is in excellent condition with a clean, mirror-bright bore.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent - Clean, well-defined polygonal rifling.
Specific Condition Notes: There are minimal indications of prior use, and the bore is clean and shiny.
What's Included
- Glock factory hard case
- Owner's manual
- Glock magazine speed loader
- 3x 15-round Glock factory 10mm Auto magazines
The Gen5 feature set stands out on this G20 MOS. It includes an ambidextrous slide-stop lever, a reversible magazine catch, and the Gen5 textured grip without finger grooves. The frame is compatible with the Glock Modular Backstrap System (MBS) to tailor grip size.
The 4.61 in cold hammer-forged steel Glock Marksman Barrel (GMB) and nDLC-treated slide are built for longevity. Forward and rear slide serrations aid manipulation, and the MOS optics interface is present with the cover plate installed.
Sight regulation is straightforward with fixed polymer sights: a white dot polymer front and a polymer rear marked with the 6.5 height code. The sight radius measures 6.93 in for a clear sight picture.
The Safe Action system with a trigger safety provides Glock's consistent striker-fired operation. The full-size frame includes an integral accessory rail and houses a 15+1 capacity in 10mm Auto.
This example bears U.S. proof and inspection markings on the barrel hood and Made in USA markings on the slide and frame, confirming domestic manufacture and inspection.




