The Pearce Grips Short Frame Insert for the Glock Model 20/21 (Pearce Grips part no. PG-FI20SF) is a drop-in insert that reduces the reach from the backstrap to the trigger, letting shooters with smaller hands get a more secure, controllable grip on Glock’s large-frame 10mm and .45 ACP pistols. Pearce Grips machines the insert to slide into the Model 20/21 grip frame in place of the factory backstrap panel, effectively shortening the trigger reach without altering the pistol’s internals or requiring a gunsmith. A better-fitted grip improves trigger control and follow-up shot speed, which matters most on a big-bore platform like the 20/21 where recoil management already asks a lot of the shooter’s grip. This insert is a direct-fit accessory rather than a structural or safety-related modification.

Key Specifications

• It is built as a Short insert, reducing trigger reach compared to the factory backstrap.
• It is a direct-fit accessory for the Glock Model 20/21 large-frame pistols.
• Pearce Grips classifies it as a Frame Insert rather than a full backstrap or grip sleeve replacement.

Frequently Asked Questions

What problem does this insert solve? It shortens the reach from the backstrap to the trigger, giving shooters with smaller hands a more secure, controllable grip on the large-frame Glock 20/21.

Does installing it require gunsmith work? No, it is a drop-in insert designed to swap in for the factory backstrap panel without special tools.

Buy the Pearce Grips Short Frame Insert for Glock 20/21

Pearce Grips builds this insert to help shooters get a more secure hold on Glock’s big-bore 20/21 platform. Browse our full Glock parts selection and order yours from our Lubbock, Texas gun shop for fast, insured shipping.