Good quality - Evolution Gun Works Oversized Firing Pin Stop Series 80

I placed this firing pin stop on my Sig Tac-Ops 1911 to shoot 45 super rounds with it. When I first received it I thought it was the wrong item because it wouldn't fit right away. After reading blog posts I discovered it need to be fitted to the gun. It took me about an hour to carefully file the sides of the stop to get to fit in the gun. The part works perfectly now. The gun cycles 45 acp, 45 acp+p and 45 super without any issues. The chamber on the Sig 1911 is supported enough to shoot 45 super without blowing up the gun in my hand. I have about 100 rounds of (expensive!)45 super and 45+p ammo through the gun with no issues or case bulge. I also placed a Wolf 26lb recoil spring with a Wilson Combat Recoil buffer and heavy firing pin spring.