I didn't think i would need this - Geissele Trigger/Hammer Fitting Pin

Wrong! The high price for a guide pin put me off for some time but really it does make pin insertion very easy without fear of damaging receiver or item your working on. The end is slightly beveled so it doesn't catch on the hard edge of the frame holes. The ball end is perfect for pressing thru stubborn hammers with heavy springs that resist pin alignment.