Description An extension for the GLOCK 43X & 48 (9mm). This extension replaces the magazine floor plate adding approximately 5/8" additional length resulting in better control and comfort without altering the capacity of the factory magazine. This extension incorporates the factory texture pattern as well as an ergonomic curve for better grip. **Grip Frame Insert Product # PG-FI48. Fits both Glock model 43X & 48