Must have original jmb design - Evolution Gun Works Oversized Firing Pin Stop Series 70

The original John Moses Browning design for the firing pin stop had just a very slight bevel on the bottom edge and this EGW part replicates the original blueprint design. Some refer to this EGW FPS as a “flat bottom” type, but there is a very slight radius on the bottom edge. The purpose of the original “square” or “flat bottom” FPS was to hold the slide locked and slow the slide velocity ever so slightly which reduces muzzle flip. Later firing pin stop designs have a much more beveled radius on the bottom edge. This was done to make the slide easier to rack without cocking the hammer first. You can definitely feel the difference that this FPS makes versus current more beveled versions. This part is oversized in width and thickness and will require fitting. The oversized design insures a tight fit that will prevent the extractor from “clocking” or twisting which will lead to more consistent extraction.