Our new AR stock adapter makes it easy to add a two bolt style (ACE) stock, Choate stock or our modular, custom billet rear stock to your Draco/Mini Draco, using our adapter between the grip and the receiver. Two threaded holes have 10/32 threads. *We include two bolts for use with the OEM grip and most aftermarket grips. Please call with any questions. This part number for the FLAT MOUNT ADAPTER ONLY, Rear stock & other parts sold separately. This rear stock can be found in our REAR BUTT STOCKS section.