When you go and purchase your AAC 762, you won't have to get your rifle threaded, just make sure you have the correct flash suppressor to snap it on to.
AAC?, No sir, I'm going the Gemtech route. I'll still get the barrell threaded. I just like the look of a bolt long gun. I'll get an Ar15 for the EBR but for long range, I like bolts... just my opinion.