Home / AR Upper Components / KNS PRECISION INC PERMA PIN FIRING PIN RETAINER 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 CMMG EJECTION PORT COVER KIT MK3 $14.95 Add to cart Out of stock SIONICS Gas Tube W/Roll Pin – Melonite – Midlength $16.95 Read more Bravo Company Manufacturing GUNFIGHTER Charging Handle 556 Mod 3B – Large Latch $74.95 Add to cart BCM LOW PROFILE GAS BLOCK 625 $44.95 Add to cart