Choose from our extensive selection of upper receivers, M-Lok hand guards, charging handles, Mil-Spec lower parts kits, rifle butt stocks and more such tactical gear available in a variety of colors. We look forward to providing the gun industry with top quality products at the best online prices. These kits are one of the most pocket-friendly ways to build your own AR15. Ghost Gun kits have all the products you will need to assemble a complete rifle or pistol minus a lower receiver. Turn your old rifle into an entirely new one with Ghost AR15 build kits that are ready to be assembled.