BAD-QRRTP Quick Release Rear Takedown PinFeatures: Dual Function Easy Pull Head CNC Machined Comes with Detent and Spring Made in the USA! Patent US10101107B1Notes:This pin 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. This product is not designed and intended as a legal compliance device or product. Battle Arms Development makes no claims or guarantees that this particular product will alone, or in-conjunction with any other device, render any firearm lawful under any State, Federal, or Local laws. If you are purchasing this device to maintain or alter the legal status of your firearm, please consult with an attorney familiar with your local, state, and federal laws. By purchasing this product, you acknowledge that you understand the above and will hold Battle Arms Development, Inc. and any of its employees, agents, dealers, distributors and affiliates free and harmless from and against any and all losses, penalties, damages, settlements, costs, legal expenses or liabilities of every kind.