Buy glock 21 gen 4


GLOCK 21 Gen4

Remarkable for its accuracy and light recoil, the GLOCK 21 Gen4 delivers the power of the 45 Auto round with high magazine capacity. The Modular Backstrap System makes it possible to instantly customize its grip to accommodate any hand size. The reversible magazine catch makes it ideal for left and right-handed shooters The Gen4 system is the perfect complement to the 45 Auto caliber cartridge.


45 Auto


Safe Action®

Mag. Capacity

Standard: 13

Barrel Length

117 mm | 4.61 inch


without magazine

745 g | 26.28 oz


with empty magazine

830 g | 29.28 oz


with loaded magazine**

1100 g | 38.80 oz

Trigger Pull***

28 N

1 LENGTH (OVERALL)* 205 mm | 8.07 inch
2 SLIDE LENGTH 193 mm | 7.60 inch
3 WIDTH (OVERALL) 34 mm | 1.34 inch
4 SLIDE WIDTH 28,5 mm | 1.12 inch
5 HEIGHT INCL. MAG. 140 mm | 5.51 inch
6 Sight Radius POLYMER 172 mm | 6.77 inch
Sight Radius STEEL 171 mm | 6.73 inch
Sight Radius GNS 170 mm | 6.69 inch
7 TRIGGER DISTANCE* 72,5 mm | 2.85 inch

* FOR GEN4/GEN5 MODELS and G44: Check out the Gen5Gen4 and G44 technology pages for medium/large backstraps (G19X and G45 see below).
Technical Data are rounded and do not reflect tolerances – they may be altered without notice! Subject to technical changes.

13 rds

Magazine G21/G41

Polymer sights

Fixed polymer sights

Polymer sights

Adjustable polymer sights

Steel sights

White insert steel sights

Steel sights

Luminescent steel sights

Steel night sights

Self luminescent steel sights

Reversible magazine catch

Flat size

Reversible magazine catch

Extended size

Slide stop lever

Standard size

Slide stop lever

Extended size

Trigger pull

Variations of trigger pull

Threaded barrels

Increased barrel length



Buy glock 21 gen 4

Buy glock 21 gen 4. The GLOCK 21 .45ACP is a gen 4 glock Glock 21 gives you everything you would expect of a .45 pistol.

New Glock Factory G21SF also for Sale.

“SF” Short Frame
The circumference of the receiver is reduced at the rear, or “backstrap” of this pistol model, which will appeal to shooters with smaller hands and offer increased comfort and control to all.

The “big bore” .45 caliber belongs to the United States like stars and stripes. Americans have always had a very special relationship with this timeless caliber. The GLOCK 21 gives you everything you would expect of a .45 pistol. Countless law enforcement units swear by this superior pistol for more than just its above-average magazine capacity of 13 rounds.

Standard models come with two 13-round magazines.
California models come with two 10-round magazines.

Length: 7.59 inches
Height: 5.47 inches
Width: 1.27 inches
Barrel Length: 4.60 inches
Weight: 26.28 oz. unloaded

We can customize and install parts for you at no charge and ship the gun fully assembled and ready to shoot. Just add the parts to your shopping cart and please make a note in the comments section providing us with any details or special requests. All factory parts will still be sent with your Glock purchase. If you have any questions, feel free to contact us.

Please note the following:
No discounts are available on the purchase of Glock factory handguns. Discounts will only apply to accessories and parts.

Also available for export outside the United States.

Yes, you can purchase a new Glock handgun on this website and have it shipped to a FFL dealer in your area. Then, you will need to go to that dealer and fulfill the local and state requirements necessary to own a handgun at which time you can take delivery of your Glock.

You can as well have it shipped to your location directly

Firearm orders generally require 12-24 hours for processing prior to shipping.

Additional information

Select Generation

Gen3 SF, Gen4

Select Magazine Rounds

10 Rounds, 13 Rounds


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