GLOCK GEN 3 : PG-FI20SF
GLOCK model 20SF/21SF Grip Frame Insert.
These units fit in the bottom rear cavity of a Glock M20 and M21 SHORT FRAME utilizing a friction fit to secure it to the frame. These grip frame inserts will not fit a Generation 4 frame nor a standard Glock M20 or M21 frame.
- Helps keep debris out of the magazine well.