Gun Report

Glock G21 SF 45 ACP, $637 (Grade B+ July 2007)

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This is an improvement on the Model 21, but it is still a big gun with little potential for concealed carry.

Glock G21 SF 45 ACP, $637 (Grade B+ July 2007)

Gun Details

Manufacturer
Model Name
Model Number
Home Defense
Law Enforcement
Recreational
Competition
Price
Caliber/Gauge
Caliber Plus Cartridge
Capacity
Weight Unloaded
Warranty
Overall Length
Barrel Length
Sight Radius
Overall Height
Front Strap Height
Back Strap Height
Maximum Width
Grip Thickness Max
Grip Circumference Max
Frame Material
Barrel Material
Grip Material
Trigger Pull Double
Trigger Span Double

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Unlocking the slide from the frame required that the latches be pulled down while the slide was shifted slightly to the rear. There were no locking pins to get lost, and reassembly was as easy as sliding the top end into place.
The addition of a right-side magazine release required that a groove be cut into the front of the magazine body. Magazines supplied with the Glock 21 SF will fit standard Glock 21 pistols, but the old magazine will not work in the new model.
We wondered what a Glock would be like with a thumb safety, so we sent the Glock 23 we tested in June 2006 to Alex Hamilton at tenring.com for installation of a Cominolli safety. Parts and installation cost $115, and turnaround was fast. We foresee a lot of cops trading in their G21s for a new model SF. Adding a Cominolli safety can only be a plus, in our view.

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