Glock G21 Gen5 MOS .45 ACP Full-Size, FDE Frame, 13+1, USA-Marked, nDLC Slide, GMB Barrel
This Glock G21 Gen5 MOS stands out with a Flat Dark Earth polymer frame, a slide marked "USA," and the Gen5 feature set. It pairs a 4.60 Glock Marksman Barrel with an nDLC-treated slide, includes the MOS interface with factory cover plate and adapter plate, and ships with three 13-round .45 Auto magazines.
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.
Rifling Condition: Excellent rifling consistent with Glock's polygonal bore.
Specific Condition Notes: Light marks from previous handling and use are present. Please refer to the photos for close-up views.
What's Included
- Glock factory hard case
- Owner's manual
- Glock MBS beavertail interchangeable backstraps (2), not installed
- Glock magazine loading tool
- Glock MOS adapter plate
- Three 13-round Glock factory .45 Auto magazines
The Gen5 MOS configuration delivers an optics-cut slide with the factory cover plate installed, plus an included MOS adapter plate for mounting compatible red dot optics. Fixed polymer notch-and-post sights provide a straightforward sight picture out of the box.
Built around the 4.60 Glock Marksman Barrel, this pistol benefits from Gen5 barrel and slide treatments, including the durable nDLC finish. The full-size frame is molded in Flat Dark Earth and features interchangeable backstraps (MBS) to tailor grip size.
Controls reflect the Gen5 updates: ambidextrous slide stop levers and a reversible magazine catch for left- or right-handed use. Glock's Safe Action system is present, and the dust cover includes an accessory rail for lights or other rail-mounted equipment.
This example is USA-marked, with the slide marked "USA" (left side between the model and caliber) and the frame molded 'MADE IN USA GLOCK, INC., SMYRNA, GA'. It comes ready for range or duty use with three 13-round magazines and the original factory case and accessories.