Protect exposed barrel threads, bore openings, barrel extensions, and gas port areas with purpose-built MK Machining Barrel Caps. Designed for spare, switch-barrel, and AR-15 setups, these reusable PA12 protectors support storage, transport, shop handling, cleaning, masking, and finishing workflows. Choose from Tenon, Muzzle, AR-15 Barrel Extension, and Gas Port Caps to build the protection setup that fits your barrel and workflow.
