Glock 21C Gen3 .45 ACP Factory-Compensated Pistol, Ported 4.6 in Barrel, Adjustable Rear Sight, 10+1, Black
This Glock 21C Gen3 is a factory-compensated .45 ACP with an integral two-port barrel and matching slide vents, built on the large-frame Gen3 platform. It features a cold hammer-forged steel barrel with polygonal rifling, an adjustable rear sight with a polymer front dot, and Austrian proof and import markings. An installed aftermarket trigger shoe with a red safety tab sets this example apart, and it comes with its Glock factory case and accessories.
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.
Bore Rifling: Excellent - Polygonal rifling with clean, well-defined bore surfaces.
Specific Condition Notes: The pistol shows a few small scratches and blemishes consistent with light handling.
What’s Included
- Glock-branded factory hard case
- 1x Glock factory 10-round .45 Auto magazine
- Glock polymer magazine loader
- Cleaning rod and brush
- Paperwork
- Installed aftermarket trigger shoe with red safety tab
The 21C is Glock’s factory-compensated variant, and this pistol retains its integral two-port 4.6-inch barrel with matching slide cuts. The compensation system vents gas upward to reduce muzzle rise, and both barrel and slide ports are factory-executed.
Built on the Gen3 large-frame architecture shared with the G20, this full-size .45 ACP uses a striker-fired, short-recoil system with a trigger safety and a left-side magazine release. The polymer frame has Gen3 finger grooves and a Glock accessory rail for lights.
The cold hammer-forged steel barrel uses polygonal rifling and is paired with a ported slide finished in black. Sights include a Glock adjustable rear and a polymer front dot for a clear, simple sight picture.
Austrian manufacture is confirmed by proof/test marks and the "MADE IN AUSTRIA / GLOCK, INC., SMYRNA, GA" import markings on the slide. Capacity is 10+1, and this pistol includes one Glock factory .45 Auto magazine.
An aftermarket trigger shoe with a red safety tab is installed, providing a distinctive visual reference while maintaining the Glock safety system.