• Extremely strong pins
• Especially recommended for M-16s, SBRs & pistol caliber cabines 
• Black Nitride treated

KNS Precision's anti-walk/anti-rotation pins were designed to withstand the high impact of full and semi-automatic 9mm and .223 suppressed weapons, along with a variety of other weapon systems. 
The pins are stainless steel and an absolute must-have for all M-16, SBR, suppressed and 9mm carbine owners. They will also protect your AR-15 or AR-10 lower receiver trigger pin holes form getting wallowed out, potentially ruining your prized receiver. Pin installation tool & 2 Allen wrenches included. No modification to firearm required. 
* The .170 size fits late model Colts. 
* For Rock River National Match triggers 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 instructions!!! Over-torquing the screws can cause damage to these sideplates 

For more information please visit, KNS Precision