The only comp i would consider - Agency Arms 417 Glock 17/19/34 Gen4 Compensator

I was hesitant to run a comp and in all honesty I wanted the slide to extend the same distance as my light (surefire x-300U). After watching Aaron from sage review this thing, it seemed like it was worth the risk. I slapped it on a shadow systems mr920 and the competition hasn't given me a single issue. once I hit2000 rounds through it I am going to move my front sight up to the comp. REALLY IMPRESSED with this after all my skepticism of running a comp! (this is on my EDC)