Well I've almost got my entire lower together. I hit a snag. I had the pistol grip and a2 stock given to me and with my financial resources the way they are I was not complaining. Only problem is that I'm missing a screw for the end of the buttstock and need to figure out what kind of screw I need. It's the Lower screw to secure the end to the stock and I need to know if If I should get a small bolt and nut ( there's a slot in the bottom of the stock that makes me think its a bolt and nut) or if there's a certain screw I need. Can any of you guys help me with this?