I bought a lot of three KNS Precision Gen2 Mod1 Trigger Group Pins I thought they all were .154, this set is .1555. So if you have a .154 set you want to trade let me know. The .1555 dia. pin is for worn receiver trigger and hammer pin holes. Being non-rotational, further wear is eliminated. They will also fit new receivers and will remove the free-play in match triggers. The .1555 will not fit Jewell Trigger System. For Rock River National Match triggers use the .1555 only.
It didn't work with my spikes battle trigger group.
Thanks for looking and God Bless