Home / AR Upper Components / KNS PRECISION INC PERMA PIN FIRING PIN RETAINER View cart “LBE Unlimited ARFPN – Firing Pin” has been added to your cart. KNS PRECISION INC PERMA PIN FIRING PIN RETAINER$10.00 1 in stock [] KNS PRECISION INC PERMA PIN FIRING PIN RETAINER quantity Add to cart UPC: 851876003011 SKU: PERMA Category: AR Upper Components Product ID: 3461 Description Description Replaces standard cotter pin found in the bolt carrier to retain the firing pin as in original Stoner rifles. ***DOES NOT FIT .308 BOLT CARRIERS*** You may also like… KNS PRECISION INC PERMA PIN FIRING PIN RETAINER $10.00 Add to cart Related products RADIAN RAPTOR AMBIDEXTROUS CHARGING HANDLE AR15/M16/M4 $94.94 – $129.95 Select options Out of stock SIONICS Gas Tube W/Roll Pin – Melonite – Midlength $16.95 Read more SOLGW GAS TUBE NITRIDE CARBINE LENGTH $19.00 Add to cart SOLGW 5.56 BOLT CARRIER GROUP 158 CARPENTER SP/HPT/MPI $179.00 Add to cart