The Glock 21 Gen 3 is a full-size striker-fired handgun chambered in .45 ACP. Perfect for duty use, self-defense, and tactical applications, the G21 has a legendary reputation for being solid and dependable. It features Glock’s Safe Action Trigger and uses double stack 13 round magazines.

2 X 13 round magazines, a We The People IWB holster, backstraps, the original case and a manual are included.

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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 Back Strap 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.
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 Line of Sight (Polymer) 172 mm | 6.77 inch
Line of Sight (Steel) 171 mm | 6.73 inch
Line of Sight (GNS) 170 mm | 6.69 inch
7 Trigger Distance** 72,5 mm | 2.85 inch

*FOR GEN4/GEN5 MODELS: Check out the Gen5 and Gen4 Technology area for medium/large backstraps.

Technical Data are rounded and do not reflect tolerances – they may be altered without notice! Subject to technical changes.

The GLOCK 21 is a big gun, no doubt about it. However, for all the internet whining you will hear about the “fit” and “grip angle”, the gun is properly shaped to fit and shoot in average size (or larger)men’s hands.

Women or men with small hands will find the gun uncomfortable to grip firmly and hold properly. The G21, like all GLOCKS will work. Period.

It is a good size for a duty pistol, or competitive practical pistol shooter, but is realistically too large for concealed carry.

Like all GLOCKs, it is utterly reliable and eats any type factory ammo put through it. And that’s where these guns really shine. Take them out of the box and start shooting. ALL GLOCKs should be carried concealed IN A HOLSTER ONLY! A holster that covers the trigger guard is essential for carrying these guns. Sticking a GLOCK down your pants without a holster is a sure way to blow off anything in them.

NOTICE: My finger on the trigger in many pictures on this site is not an oversight or disregard for safety. It is to illustrate how a handgun grip fits in my hand when ready to shoot.

UPC GDC0000017104
Caliber .45 ACP
Capacity 13 ROUNDS
Barrel Length 4.61 BARREL
Weight 1.82 LBS.
Finish BLACK



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