Battle Arms Development Quick Release Rear AR Takedown Pin Phosphate. Patent Pending Notes: 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. Specifications for Battle Arms Development Quick Release Rear AR Takedown Pin: Manufacturer: Battle Arms Development Color: Black Additional Features: Dual function Package Contents: Battle Arms Development Quick Release Rear AR Takedown Pin Battle Arms Development BAD-QRRTP: Quick Release Rear AR Takedown Pin Phosphate