Glock 21 Gen5 MOS .45 ACP Full-Size, 4.5 in GMB Barrel, Optics-Ready, USA-Made, 5x 13-Round Mags
This Glock 21 Gen5 MOS is a full-size .45 ACP with the Gen5 feature set and an optics-ready MOS slide. It is USA-made with corresponding barrel and frame markings and comes well-outfitted with five 13-round magazines, MOS adapter plates, a Blade-Tech Kydex holster, and the factory case. The 4.5-inch Glock Marksman Barrel, black nDLC slide finish, ambidextrous controls, and interchangeable backstraps round out a practical, modern .45 Auto configuration.
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 Rifling - Well-defined polygonal rifling.
Specific Condition Notes: This pistol shows little evidence of prior use. The bore is clean and shiny. The firearm is in excellent condition throughout.
What's Included
- Glock factory hard case
- 5 Glock 13-round .45 Auto magazines
- Glock MOS adapter plates
- Glock factory manual
- Two additional Glock MBS interchangeable backstraps
- Blade-Tech Kydex holster
The Gen5 MOS configuration provides an optics-cut slide with a cover plate installed from the factory, and the included adapter plates offer mounting interface options. Front and rear slide serrations and a beveled nose aid manipulation and holstering.
The 4.5-inch Glock Marksman Barrel is cold-hammer-forged with polygonal-style rifling, designed for consistency and durability. The slide wears a black nDLC finish, and the frame is polymer with Glock's Gen5 profile that omits finger grooves.
Controls include ambidextrous slide stop levers and a reversible magazine release. The frame features a flared magwell for efficient reloads and a Glock accessory rail for compatible attachments.
Capacity is 13+1 in .45 ACP, and this example comes with five factory 13-round magazines. Sights are fixed iron with a front blade and rear notch.
Manufactured in the USA, this pistol is marked with a US barrel marking and "MADE IN USA" on the frame, reflecting its domestic production.