Glock 21SF Short Frame | .45 ACP | 4.61 in Barrel

The GLOCK 21SF (short frame) is a Gen3, .45 ACP, striker-fired semi-automatic pistol built with a reduced rear-frame circumference to improve control for shooters with smaller hands. It uses GLOCK’s Safe Action system with three automatic, independently operating mechanical safeties and features a cold-hammer-forged barrel and corrosion-resistant slide finish. For a durable, under-$1000 optic that pairs well with this platform, a small reflex sight such as the Trijicon RMR is a practical choice for quick target acquisition and reliable performance.

Common applications include duty carry and range/target shooting where .45 ACP performance and manageable recoil are desired.

Product Specifications

• The caliber is .45 ACP.
• The barrel measures 4.61 inches.
• The action is Striker Fired.
• The magazine capacity is 10 + 1.
• The package includes 2 x 10-Round magazines.
• The frame is made of Polymer.
• The frame finish is Black.
• The grip is Black Textured Finger Grooved Polymer.
• The slide is Serrated.
• The sights are Fixed.
• The barrel type is Octagonal Rifled.
• The muzzle is Plain.
• The safety system is Trigger/Firing Pin/Drop.
• The unloaded weight is 25.9 oz.
• The UPC is 764503072017.

The G21SF delivers the proven characteristics of the GLOCK 21 platform in a slightly more ergonomic package for users who prefer a reduced backstrap circumference. Build quality, corrosion-resistant treatments on critical components, and the straightforward controls make this pistol well suited to users who value robust function and simple maintenance. The short-frame geometry helps many shooters achieve improved grip and recoil management without changing the cartridge or core platform features.

Users commonly praise the G21SF for its reliable function and controllable recoil, and many note that the shortened rear strap improves comfort for shooters with smaller hands.

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