JP Oversize Anti-Walk Pins are the icing on the cake. Removing all the slop between the trigger, hammer, pins and the receiver results in that extra bit of refinement to get the maximum performance potential out of high grade parts. Precision oversize trigger and hammer pins for a "no play" fit between fire control components and perfect parallelism. No modification to the lower receiver is needed, but be aware that the trigger and hammer may have to be reamed for a perfect fit with these parts. The downside: installation is a bit more difficult and detail stripping the lower receiver will require a bit more care. Finish is black oxide.
JP Anti-Walk Pins will eliminate pin slippage in your receiver for the best possible trigger feel.