Pantheon Arms provides cost effective solutions for turning any mil-spec AR15 upper receiver and barrel into a quick detach system. After installing compatible Pantheon Arms parts, you will be able to disassemble your AR15 with a twist of your wrist to switch between multiple barrels equipped with various calibers, or for safer covert carry in a smaller backpack or messenger bag. There is nothing else like these high quality Pantheon Arms accessories, which are available as parts to convert your exiSting AR platform or you can purchase one of the fine kits, some including handguards. For background information, browse our informative GearExpert Blogs or our collection of articles about installing gun parts. Our product experts have decades of hands-on experience and are a free resource we provide, so contact them for ideas via email, chat or phone. Buy from OpticsPlanet.com for great service and great gear at great prices. Plus free shipping on orders over $49.