Description
The genuine GLOCK OEM modular backstrap kit is a factory-original replacement system designed to customize the grip circumference of your pistol to perfectly match your individual hand size. The kit includes four dynamic inserts: Medium and Large sizes, both available in standard or with an extended Beavertail design. Molded from the exact same high-strength factory polymer as the pistol frame, these backstraps feature the signature GLOCK rough texture surface for enhanced traction.
- Complete Factory Kit: Features 4 backstrap pieces, an extended trigger housing pin, and a dedicated installation punch tool.
- MBS (Modular Backstrap) Frame Function: Modifies trigger reach distance. Shooting without any inserts keeps the frame at the short-trigger-distance size (SF).
- Beavertail Slide Protection: The extended beaver tail variants effectively prevent slide bite for shooters with larger hands while improving recoil control.
Compatibility:
- Fits GLOCK Full-Size 9x19mm Models: Glock 17, Glock 34, Glock 45, Glock 47, Glock 49.
- Note: When installing any backstrap, you must use the included extended pin to properly secure the piece to the frame.





