OpticsPlanet
Pearce Grip Frame Insert Fits Glock M20 and M21 Short Frame PGFI20SF
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From OpticsPlanet
Pearce Grip Frame Insert Fits Glock M20 and M21 Short Frame PGFI20SF. Fills in the bottom rear cavity in the heel of the grip body utilizing a friction fit to secure it to the frame. Helps keep debris out of the magazine well. For Glock SF (Short Frames) only. These grip frame inserts will not fit a Glock Generation 4 frame nor a standard Glock M20 or M21 frame.