The Battle Arms Quick Release Rear Takedown Pin Kit was designed as a retention device only and to streamline the reloading process by working in-conjunction with devices designed and intended to require the upper be lifted upwards and away from the lower receiver using the front pivot pin as the fulcrum, before the magazine may be removed. Precision Swiss CNC machined from round stock steel bars, the Quick Release Takedown Pin is case hardened and finished in mil-spec black manganese phosphate. FeaturesDual FunctionEasy Pull HeadCNC Machined