Luth-ar Firing Pin Retainer Features The Luth-ar Firing Pin Retainer is machined from carbon steel giving it the strength needed to withstand the repeated stress of the bolt carrier group cycling during firing. Its manganese phosphate finish adds a layer of corrosion resistance while also reducing glare keeping the part protected whether it sees range use or field conditions. As a small purpose-built component it is responsible for keeping the firing pin properly retained within the bolt carrier which is essential to safe and consistent function. A loose or missing retainer can allow the firing pin to shift out of position so replacing a worn one keeps the action running as designed. Because this retainer is a direct-fit replacement part it installs using the same basic tools and process as the factory original making it accessible to builders and owners performing routine maintenance. Luth-ar s manufacturing standards aim to match or exceed mil-spec tolerances so the fit against other bolt carrier components stays consistent. Keeping a spare on hand is a smart practice for anyone who shoots frequently since small parts like this are prone to loss during detailed cleaning or disassembly. For AR owners performing a bolt carrier group rebuild or simply restocking spare parts this firing pin retainer is a dependable low-cost addition available for sale at GrabAGun. Luth-AR Firing Pin Retainer Specifications Manufacturer: Luth-AR Model: Firing Pin Retainer Material: Carbon Steel Finish: Manganese Phosphate Available At: GrabAGun