Just traded my 32 Lewis built backwards lock for this Chris Hageman built 32 backwards lock. It uses a simple trigger and the internals of the lock seem original. Just a custom frame, barrel, and lock plate. The lock still uses and works just like a standard or traditional one. Easy to work on and maintain or repair. I put the grips on it, the trigger stop, and the spring behind the trigger for extra weight. I'm gonna use it in the friendship matches this year.