These are the Generation 2 Mod 2 pin sets in STAINLESS STEEL. They are the STRONGEST pins that can be produced and were designed to withstand the high impact of full and semi 9mm and .223. They will also fit the .308 ARrifles. The pins are stainless steel. End retainers are STAINLESS STEEL. An absolute must-have for all owners. They will also protect yourAR. Special anti-creep retainers prevent wear on your irreplaceable ARreceiver. Pin installation tool & 2 Allen wrenches included. No modification to firearm required. THE TORQUE SPEC ON THE SCREW IS 11 inch/lbs. MAXIMUM. We recommend 8INCH/LBS of torque. The .1555 dia. pin is for worn receiver trgger and hmmer 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. IMPORTANT NOTE: The external width of some ARreceivers may vary in the trgger/hmmer pin area depending on the manufacturer. Our pins may be shortened a small amount by carefully filing material evenly from both ends of the pins. The being too long will not affect the function or performance. The .170 size fits large pin Colts. For Rock River National Match trggers use the .1555 only. The only difference from the Gen 2 pin kit is the appearance of the sideplates. There is no strength difference. PLEASE READ the INSTRUCTIONS!!! Over-torquing the screws can cause damge to these sideplates.
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