Glock G21 Gen5 MOS .45 ACP Full-Size, 4.61 in Barrel, nDLC, USA-Made, 13+1 Capacity, 3 Magazines, MOS Plate 06
This Glock G21 Gen5 MOS is a full-size .45 ACP with the Gen5 feature set and MOS slide cut, finished in nDLC. It includes three 13-round factory magazines, the Glock MOS adapter plate 06, a Glock factory hard case, and the original owner's manual. U.S.-made slide and frame markings confirm this example was produced in the United States.
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 - Sharp lands and grooves.
Specific Condition Notes: Minimal handling marks are present on exterior surfaces. Refer to photos for close-up views.
What's Included
- Glock factory hard case
- Glock owner's manual
- Glock MOS adapter plate 06
- Three (3) 13-round .45 Auto Glock factory magazines
- Glock magazine loader
The Gen5 MOS configuration adds a factory-machined MOS optics cut on the slide, paired here with the included Glock adapter plate 06. Forward and rear slide serrations provide positive manipulation, and the durable nDLC finish covers the slide.
The frame is Gen5 pattern with an updated texture, no finger grooves, and a flared magwell. Ambidextrous slide stop levers support left- or right-handed use. The frame is compatible with Glock's Modular Backstrap System (backstraps not shown).
This full-size .45 ACP features a 4.61 in steel barrel and a 13+1 capacity using the included 13-round double-stack magazines. It uses Glock's striker-fired Safe Action system.
Sight picture is the standard fixed polymer set with a white-dot front and white-outline rear for a clean, familiar view. An accessory rail is integrated for compatible lights.
U.S.-origin markings include "USA" on the slide and "MADE IN USA • GLOCK, INC., SMYRNA, GA" on the frame, identifying this as a U.S.-made variant.




