Glock 21 for Sale

Looking to buy Glock 21? Discover new and used listings from verified sellers across the U.S. Only on GunsAmerica.

Quick Look

The Glock 21, introduced in 1990, is a full-size .45 ACP pistol designed for durability and simplicity. It emphasizes reliability and high magazine capacity for its caliber. Today, it remains a popular choice among law enforcement and self-defense shooters seeking powerful stopping power with dependable performance.

Why It's a Top Choice

Reliable, proven Glock Safe Action trigger system
Compact for a .45 ACP full-size pistol
Generous 13-round magazine capacity
Resistant to corrosion and harsh conditions
Wide aftermarket parts and accessories support

Key Variants

Glock 21 Gen5

Latest generation with improved grip texture and nDLC coating for enhanced durability and ergonomics.

Glock 21 SF

Short frame variant offering better concealability while maintaining .45 ACP power for duty use.

Glock 21 C

Compensated model built to reduce muzzle rise for faster follow-up shots in competition or tactical scenarios.

Competitor Comparison Table

Feature	glock 21	sig sauer p220	smith & wesson m&p45
MSRP	$650–700	$900–1,000	$500–600
Capacity/Size	13+1 rounds, Full-size	8+1 rounds, Full-size	17+1 rounds, Full-size
Weight	Approximately 28.3 oz	Approximately 34 oz	Approximately 30 oz
Optics-Ready	Available on Gen5 models	Yes	Yes
Trigger Type	Safe Action Striker	Double action/single action	Striker-fired
Notable Pro	High capacity for caliber, low maintenance	Classic design, smooth DA/SA trigger	High capacity, ergonomic grip
Notable Con	Large size, heavier than 9mm pistols	Lower capacity, heavier weight	Trigger pull consistency varies

Best Use Cases

Self-defense with powerful .45 ACP rounds
Law enforcement duty sidearm
Home defense and security
Range training and practice
Collection for full-size handguns

FAQs

Can I use standard .45 ACP ammo in the Glock 21?

Yes, the Glock 21 is chambered specifically for .45 ACP and performs reliably with standard ammunition types.

What is the magazine capacity of the Glock 21?

The standard magazine holds 13 rounds of .45 ACP, offering higher capacity than many pistols of similar size.

How does the Glock 21 handle recoil for a .45 ACP?

Its full-size frame and polymer grip help mitigate recoil, providing manageable shooting comfort compared to smaller pistols.

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