Our AR stock adapter paired up with the ATF approved Shockwave Blade Stabilizer. Easy to install on your AK47 Century Arms C39 pistol using our adapter attaching to the rear of your receiver through the sling hole. **Complete kit includes the Adapter, pistol buffer tube, castle nut, and Shockwave Blade, other parts sold separately.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