Glock 21

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Glock 21 Gun Stats

Glock 21

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Remarkable for its accuracy and light recoil, the GLOCK 21SF delivers the legendary stopping power of the .45 AUTO round with 10/13 round magazine capacity. Countless law enforcement units swear by the G21SF pistol, and that's why this powerful, lightweight, all climate workhorse is standard issue from the North to South Poles. The SF model reduces the circumference of the receiver at the rear, or "back strap," offering increased comfort and controlespecially for shooters with smaller hands.

Glock 21 For Sale

Glock 21 Specs

1 Brand

2 Category

Technical Data


.45 Auto (.45 ACP)


Safe Action







Barrel Length




Gun Type





38 oz




1.35 Inches

Glock 21 Features

The Glock 21 is a full-sized semi automatic pistol chambered in .45ACP and is available in Gen 3 and Gen 4 variants.  It has a reversible magazine release button, an accessory rail along the front of the frame for lights and lasers, and comes standard with a 13 round magazine.

Glock 21 Ballistics

.45 Auto (.45 ACP) Ballistic Data
Range (Yards) Drop (inches) Velocity Energy Wind drift (inches) Time (milliseconds)
0 0 0 0 0 0
50 0 0 0 0 0
100 0 0 0 0 0
150 0 0 0 0 0
200 0 0 0 0 0
250 0 0 0 0 0
300 0 0 0 0 0
350 0 0 0 0 0
400 0 0 0 0 0
450 0 0 0 0 0
500 0 0 0 0 0

Glock 21 Capacity

Chambered in .45ACP, the Glock 21 uses a double-stack, single-feed magazine with capacities of 10 and 13 rounds.  Glock and other magazine manufacturers also offer a 26 round magazine.

Glock 21 Ergonomics

The Glock 21 is a full-size pistol with a double-stack .45 caliber magazine, so the physical size of the grip may be difficult for users with smaller hands to get a full, proper grip.  However, the overall shape of the Glock 21 offers nearly the identical ergonomics of other full-size Glocks like the Glock 17.

Glock 21 Fit & Finish

The build quality of the Glock 21 is exactly what you would expect out of any Glock.  The nDLC coating is consistently applied across the slide, and the polymer frame is free of any overpress defects from the injection molding process.
Fit and Finish

Glock 21 Concealability

With its full-size construction and boxy design, the Glock 21 would be very difficult to conceal without considerably loose fitting clothing or winter attire.  With a length over 8 inches and a height of 5.5 inches, the Glock 21 works better in an open-carry setting.

Glock 21 Parts & Upgrades

How much is a Glock 21 worth?

In 2024 a new or used Glock 21 value varies depending on supply and demand. In the last 12 months there is great demand for a Glock 21 and most handguns. The Price for a Glock 21 has increased in cost by $0.00 in 2024 compared to 2023.

Estimated New and Used Values for a Glock 21 Values are based on a basic model with no options or colors.

Condition Trade-In Private Party Dealer
New In box $356.59 $466.31 $548.60
Excellent $329.16 $438.88 $493.74
Very Good $301.73 $438.88 $493.74
Good $274.30 $411.45 $466.31
Fair $192.01 $356.59 $438.88
Poor $137.15 $274.30 N/A

Gun Value Conditions explained:

New in box - 100% condition in unopened box. Excellent - 95%+ condition with or without box.

Very Good - 90% - 95% condition (all parts/finish should be original).

Good - 80-90% condition (all parts/finish should be original).

Fair - 30% - 80% condition, parts, and finish may or may not be original. Must function properly and shoot.

Poor - under 30% condition. Firearm has severe wear and tear, does not function, or is damaged.

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