Frankford Arsenal AR-15 Lower Receivers...a great new product which can be purchased as a stripped lower or assembled with complete parts kit. All lowers are hand assembled from mil-spec parts by All American Tactical, LLC in Athens, TN. an 07 manufacturer. Parts and assembly warranted for life. Must only be shipped to a licensed dealer (FFL Holder). Retail buyers please visit our Accessory Page. For more information on wholesale prices and law enforcement sales please contact: adrienne@allamericangunshop.com. 7075-T6 Aircraft Aluminum Receiver. Forged, Heat Treated, and Hard Coat Type 3 Anodized with Mil-Spec 8625 Teflon Coating. Black, Matte Finish. Frankford Arsenal™ Trademarked “TACTICAL RECEIVER GROOVING”™ on front receiver magazine well strap. Increases surface area of AR-15 lower receiver. Proprietary design gives user/operator increased retention and locking/grip area on finger/inside palm swell, and gloved hand usage. Enhanced heat disapation capability. Increases structural rigidity and crush strength of AR-15 lower receiver. Strengthens front receiver push pin towers. Increases service life of lower receiver. Increased grip surface when weapon is covered in oil, mud, or other viscous material. Frankford Arsenal™ lower receivers also incorporate lowered rear internal receiver shelf. This is the perfect platform on which to build your dream AR.