This drill and tap set can be used to drill and tap (2) 10/32 bolts to your AK47 receiver or other firearm. It will allow you to mount a flat folding adapter, AR buffer tube mounting adapter, our billet rear stock, our Galil AK47 rear stock, or Ace type flat mount rear stock. All stocks can be found in our Rear Buttstocks section- http://usmachinegun.com/products.php?cat=19