This part number includes the adapter, buffer tube, and 6 position AR rear Stock. , other parts sold separately. Our new patent pending AR stock adapter makes it easy to attach this set up to your Century Arms C39 AK pistol to the rear of your receiver through the sling hole. Please call with any questions. This part number includes the adapter, buffer tube, and 6 position AR rear Stock , other parts sold separately. Pics 3 and 4 show all parts included for each model. *****PLEASE TELL US IN THE COMMENTS SECTION IF YOU HAVE A NEWER V2 or RAS 47 MODEL, OR WE WILL SHIP YOU THE STANDARD C39 ADAPTER WITH THIS SET UP