This is a Pearce Grip known as the Frme Insert, model PGG4SC.
This unit installs in the bottom rear cavity of the frame utilizing a friction fit for retention. Fits model 26" 27 and 33. This product will only fit Generation 4&5 frames. Allows for use of factory interchangeable backstraps.
Features:
High Impact Polymer
Keeps Out Dust and Debris
Friction Fit
