Really helps smooth out the trigger pull - Apex Tactical Specialties 102151 Action Enhancement Glock 17,19,19x,26,34,45 Ge

I picked this up for my Glock 19; it was pretty easy to install and it made a noticeable difference in the trigger pull. It is a smooth pull all the way through now. I am really happy with the purchase and believe it provides the most value for the cost in comparison to the zev and will be getting another one soon to install on my Glock 44 also.