GLOCK 21 for Sale
Browse GLOCK 21 listings from verified sellers across the U.S. on GunsAmerica.
Quick Look
The Glock 21, introduced in 1990, is a .45 ACP pistol known for its large frame and high capacity. It blends Glock's signature reliability with a powerful caliber, making it popular among law enforcement and self-defense users. This model holds a respected position for those seeking a robust .45 ACP handgun with proven performance.
Why It's a Top Choice
- High 13-round magazine capacity
- Durable polymer frame construction
- Consistent Glock Safe Action trigger system
- Wide aftermarket accessory support
- Trusted by various law enforcement agencies
Key Variants
Glock 21 SF
An ergonomic variant featuring a slimmer Safety Frame for improved grip and concealability.
Glock 21 Gen4
Modernized with modular backstraps and reversible magazine release for enhanced customization.
Glock 21 Gen3
The classic Gen3 model known for durability and a robust grip texture.
Competitor Comparison Table
| Feature | Glock 21 | Smith & Wesson M&P45 | Sig Sauer P320 |
|---|---|---|---|
| MSRP | $599 - $699 | $649 - $749 | $599 - $799 |
| Capacity/Size | 13+1 rounds, full-size | 13+1 rounds, full-size | 17+1 rounds, full-size |
| Weight | 33.3 oz | 29 oz | 29.8 oz |
| Optics-Ready | No (Gen4 kits available) | Yes | Yes |
| Trigger Type | Safe Action | Striker-fired | Striker-fired |
| Notable Pro | Proven reliability in .45 ACP | Modular design and optics-ready slides | Fully modular fire control unit |
| Notable Con | Heavier than many competitors | Less capacity than some full-size pistols | Higher MSRP on some models |
Best Use Cases
- Home and personal self-defense
- Law enforcement duty use
- Range training and practice
- Outdoor recreational shooting
- Handgun collection and enthusiasts
FAQs
Can I use Glock 21 magazines in other Glock models?
Glock 21 magazines are compatible with other .45 ACP Glock pistols like the Glock 30 and Glock 36 but not with 9mm models.
What is the trigger pull weight of the Glock 21?
The standard Glock 21 trigger pull weight is about 5.5 pounds, consistent with Glock's Safe Action system.
How does the Glock 21 Gen4 improve upon previous generations?
Gen4 adds modular backstraps, a reversible magazine release, and improved grip texture for better ergonomics and customization.
