GLOCK 21 SF (Short Frame)

The Glock 21 SF offers everything expected of a 45 Auto pistol. However, the SF design reduces the circumference of the receiver, offering improved ease of use and control, particularly to shooters with smaller hands.

The GLOCK G21 SF Semi-Auto Pistol, Glock 21sf, Glock 21 sf gen 3 is a semi-automatic pistol chambered in .45 ACP (Automatic Colt Pistol). SF stands for “Short Frame,” indicating that the grip is shorter front-to-back than the standard Glock 21. It makes it more comfortable for shooters with smaller hands to grip and control.

The GLOCK G21 SF Semi-Auto Pistol, Glock 21sf gen 3 has a 4.6-inch barrel and an overall length of 8.03 inches. It has a polymer structure and a steel slide, making it lightweight and durable. But it has a capacity of 13+1 rounds and is popular with law enforcement and civilian shooters for its accuracy, reliability, and stopping power.

Overall, the Glock 21 SF .45 ACP, g21sf vs g21, is a well-regarded handgun known for its reliability, durability, and accuracy. As with any firearm, proper training and safety precautions are essential for safe and effective use.

What generation is Glock 21SF 45 Auto?

The Glock 21SF 45 Auto, glock 21 for concealed carry, a regular third-generation Glock pistol, has mounting rails for lights or lasers on the dust cover and finger grooves sculpted into the grip frame.


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 medium/large backstraps for GEN4/GEN5 models, look under the Gen5 and Gen4 Technology sections.

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

Glock 21SF Short Frame Gen3 45 ACP 4.6″, Fixed Sights, Glock 21 fde, 13 Round. Glock 21r, Glock 21 Short Frame .45 ACP 4.6 Inch Barrel Black Finish Fixed.

The “big bore” 45 Auto caliber has been held in high esteem for a long time. This classic caliber holds a particular place in the hearts of many shooters. We can see a similar Glock 21 Gen4 here.


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