Glock G21 Gen4 .45 ACP Full-Size Pistol, 4.61" Barrel, Austrian-Made, Matte Black
This Glock G21 Gen4 is a full-size, large-frame .45 ACP pistol made in Austria with CIP and AT proof marks and Glock, Inc. Smyrna, GA import marking. It features a 4.61" cold hammer forged steel barrel with right-hand polygonal rifling, the Gen4 dual-captive recoil spring assembly, and the Modular Backstrap System with rough texture and finger grooves. It comes with a Glock OEM 13-round magazine and a factory hard case. Overall condition is good, with an excellent, mirror-bright bore.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent - Well-defined polygonal rifling.
Specific Condition Notes: Surfaces show light handling consistent with prior use. The bore is bright with a mirror-like shine.
What’s Included
- Glock G21 Gen4 pistol
- 1x Glock OEM 13-round .45 Auto magazine (Austrian marked)
- Glock factory hard case
The G21 Gen4 is Glock's large-frame .45 ACP with a 4.61" barrel and a robust dual-captive recoil spring assembly tailored to manage .45 Auto recoil. The barrel is cold hammer forged with right-hand polygonal rifling and a 1:15.75 twist, emphasizing durability and consistent performance.
Gen4 updates include the Modular Backstrap System and a rough-textured frame with finger grooves for a secure, adaptable grip. The enlarged, reversible magazine catch supports left- or right-handed operation, enhancing ergonomics without altering the proven Glock control layout.
The slide wears a matte black finish with rear-only serrations and houses factory polymer sights: a white-dot front and white-outline rear. A single-slot Glock accessory rail on the frame provides space for compatible lights or other rail-mounted accessories.
This pistol bears Austrian manufacture markings with CIP proof and AT proof marks, along with the Glock, Inc., Smyrna, GA importer stamp. The included OEM magazine has witness holes to 13 and is Austrian marked, matching the pistol’s origin.