For use with Tripp or other brands of 6-8 round .45acp caliber magazines. Kit includes hybrid follower and 14 coil .048 spring. This kit allows for 7 round capacity in Government length magazines; 6 rounds in Officer length magazines. Solves many lock-back and feeding issues.
Note: The spring in this kit may also work as a spring replacement for the factory STI 10 round magazine according to some of our customers.