Glock G20 Gen5 MOS 10mm Auto, 4.61 in Glock Marksman Barrel, nDLC, USA-Marked, 3x 15-Round Mags
This full-size Glock G20 Gen5 MOS stands out as a U.S.-made example with "USA" slide and Smyrna, GA frame markings. It features the Glock Marksman Barrel with polygonal rifling, an nDLC-finished slide with front and rear serrations, and ambidextrous slide stop levers. The MOS cut has its cover plate installed, and the pistol retains fixed white-dot/outline sights. It comes with three 15-round magazines plus an Aimpoint Acro P-2 MOS adapter plate, the factory case, loader, and manual.
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 - Distinct polygonal rifling with clean, well-defined surfaces.
Specific Condition Notes: This pistol appears to have been maintained very well. The bore is bright and shiny.
What’s Included
- Glock factory hard case
- Glock operator manual
- Glock OEM polymer magazine loader
- Aimpoint Acro P-2 MOS adapter plate
- 3 Glock factory 15-round 10mm Auto magazines (polymer bodies)
The Gen5 configuration brings ambidextrous slide stop levers, an updated grip with Gen5 texture, no finger grooves, and a flared magwell. The frame is black polymer and retains the Glock accessory rail for lights or other compatible accessories.
The 4.61 in Glock Marksman Barrel uses polygonal rifling with a 1:9.84 in twist, paired with Glock’s durable nDLC slide finish. The slide has front and rear serrations and a MOS optic cut; the factory cover plate is installed, and an Aimpoint Acro P-2 MOS adapter plate is included.
Sights are fixed, with a white-dot front and a white-outline rear marked 6.5; sight radius measures 6.93 in. The Safe Action System and a loaded chamber indicator are present. Trigger weight is listed at 5.8 lb.
Chambered in 10mm Auto, this G20 offers a 15+1 capacity and includes three Glock factory 15-round magazines. This is the U.S.-made variant with "USA" on the slide and Smyrna, GA frame markings, and the frame, slide, and barrel carry matching serial markings (partial on slide/barrel).




