Easy install - experienced user - Herrington Arms Glock 19/17/26 HC9XL 3.0 Pistol Compensator

I have two of these. Both have worked phenomenally on both a G45 and a Gen 3 G19. Having an understanding of the functions of handguns also helps. Avoid using 115 grain when you have a compensated handgun. Make sure you degrease the screws, and dry before proper insulation with a thread mate. For this particular one do a dry fit and do slide cycles to make sure that the slide locks back to know how far you should thread it on.