KNS Non Rotational Hammer and Trigger Pins Mod 2 .154. These Generation 2 MOD 2 pin sets are strong and were designed to withstand the high impact of full and semi-auto 9mm, .223, and 7.62mm suppressed weapons. The pins are stainless steel. End retainers are black oxide. Special anti-creep retainers prevent wear on your receiver. Pin installation tool & 2 Allen wrenches included. No modification to firearm required. The .154 dia. pin is for new receiver trigger and hammer pin holes. As a non-rotational pin set further wear on the receiver is eliminated. They will also fit new receivers and will remove the free-play in match triggers.