Glock G21 Gen5 MOS .45 ACP Full-Size, 4.61 in GMB Barrel, nDLC Finish, 10+1 — Made in USA
This Glock G21 Gen5 MOS is a full-size .45 ACP pistol manufactured in the USA (Smyrna, GA). It features a 4.61 in Glock Marksman Barrel with an nDLC-treated slide, ambidextrous slide stop levers, and a reversible magazine catch. The slide has front and rear serrations and a factory MOS optics cut with the cover plate installed. It comes with three 10-round factory magazines and fixed polymer sights with a white-dot front and white-outline rear.
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 - Sharp lands and grooves.
Specific Condition Notes: Shows minimal evidence of prior handling. The bore is clean and shiny.
What’s Included
- 3x 10-round factory Glock .45 Auto magazines (floorplates marked 'GLOCK AUSTRIA')
- Optic adapter plate
- Magazine speed loader
- GLOCK beavertail backstrap (not installed)
- GLOCK factory hard case
The Gen5 configuration brings ambidextrous slide stop levers and a reversible magazine catch, making the controls adaptable. The frame is polymer and compatible with the Modular Backstrap System; a GLOCK beavertail backstrap is included for optional fit.
The 4.61 in steel Glock Marksman Barrel and nDLC-treated slide are paired with front and rear serrations for confident manipulation. Fixed polymer sights deliver a clear white-dot front and white-outline rear sight picture.
The MOS slide includes the factory cover plate and an optic adapter plate in the case, providing flexibility for mounting a compatible optic if desired. An accessory rail on the dustcover supports common weapon-mounted lights.
Country-of-origin markings confirm USA manufacture in Smyrna, GA. The factory case label matches the pistol’s serial. Three 10-round magazines are included, each with floorplates marked 'GLOCK AUSTRIA.'