Pearce Grip Grip Extension, For Glock 26/27 Gen4/5, Adds 5/8 Additional Length, Black G526 An extension for the GLOCK 26 & 27 Gen 4 & 5. 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.