This is the most modular, lightweight, and affordable chassis on the market for the FX DRS Classic. It is the only chassis that accepts many full-size AR grips with beavertails, a real AR handguard from Strike Industries, and a modular stock system that allows for a host of stock options. The chassis was made to pair with our PRS style stock, but it also comes with a 1913 rear facing picatinny adapter that will accept picatinny interfacing stocks and side folders. It also comes with a threaded adapter that will accept 1-3/16x16 threaded stocks and extension tubes for AR adjustable buttstocks. This listing includes the grip adapter, scope riser, PRS-Style Buttstock, and SLS ARCA Handguard. Everything you need except for the AR Grip.