My melonite PC1911, this one is stock, and my 627-4 38 Super purchased off a forum member. I polished the internals swapped the hammer for an Apex, cut a new DA sear, added an 11lb rebound spring, bent the mainspring and worked some other tuning magic. Running a reliable 5.5-6lbs DA on Fed Magnum primers no with none of this extended firing pin garbage. External stuff is a Leupold Deltapoint and Hogue Big Butts.