I'm assuming you're referring to the waiting period. Actually, if you have a state-issued CCW, no, there is no waiting period on handguns, and there is none at all on long guns.
There is no federal waiting period on either. Provided your instant background check really is instant. Could be up to 3 working days otherwise. There was a 5 day waiting period on handguns, and no check on longguns at all, in the interum period while the instant check system was being developed. It was something of a trick that longguns came under the instant check at all.