Home / AR Upper Components / KNS PRECISION INC PERMA PIN FIRING PIN RETAINER “SOLGW 5.56 BOLT CARRIER GROUP 158 CARPENTER SP/HPT/MPI” has been added to your cart. View cart KNS PRECISION INC PERMA PIN FIRING PIN RETAINER$10.00 2 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 AERO PRECISION 5.56 AR15 BOLT CARRIER GROUP BLACK NITRIDE $154.99 Add to cart Out of stock RADIAN RAPTOR SD-SL CHARGE HANDLE AR15/M16 $113.95 Read more LBE Unlimited ARFPN – Firing Pin $7.95 Add to cart SPRINCO ENHANCED CHROME MOLY EJECTOR AND SAFETY SPRING $4.39 Add to cart