Glock G21 Gen4 .45 ACP Semi-Automatic Pistol, 4.6" Barrel, 10+1 Capacity, Matte Black
The Glock G21 Gen4 delivers full-size .45 ACP power with the proven Gen4 upgrades: a dual-recoil spring assembly for reduced felt recoil, a rough-textured frame, and interchangeable back-straps that let the shooter fine-tune grip size. Its 10-round magazines make it compliant in capacity-restricted areas while still offering ample firepower. Built on Glock’s durable polymer frame and finished in matte black, this pistol blends manageable recoil with service-grade reliability.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Good – Clean, well-maintained, minor wear marks.
Bore Fouling: Mild Fouling – Light buildup of fouling or dirt.
Bore Rifling: Excellent Rifling – Sharp lands and grooves.
Specific Condition Notes: The slide and frame show scattered scuffs and small spots of pitting, but all controls cycle smoothly and the pistol functions properly in dry-fire checks.
What’s Included
- Glock factory hard case
- Three 10-round Glock .45 ACP magazines
- Two extra Gen4 interchangeable back-straps
Gen4 enhancements start with the recoil system. The dual-recoil spring assembly extends service life and softens recoil impulse, making follow-up shots quicker and reducing wear on internal parts.
The rough-textured frame provides a secure hold even with gloves or sweaty hands, and the modular back-strap kit (medium and large) lets shooters tailor the grip circumference without altering the angle Glock is known for.
A reversible magazine release accommodates left- or right-handed users. Combined with the familiar Glock trigger safety, the G21 Gen4 maintains consistent, striker-fired operation with a short reset.
The slide wears a durable matte-black finish and rear serrations for confident manipulation. Fixed polymer three-dot sights offer a clear sight picture, and the integral Glock rail accepts weapon lights or lasers.