Funny thing about waiting periods. If they are a legal requirement, they make me nuts! In New York State, each handgun purchase must be approved by the county which issues the permit, and that turn-around time can vary a lot. Bugs the hell outta me.
However, I just bought a used rifle out of Texas, and it's got a "waiting period" too, that being the time necessary to foward the money and an FFL to the seller, then wait for the shipment to arrive at the dealers. That can easily take ten days, but, since it's not a legal thing, just a processing timeframe, it does not bother me much.
Hoping the rifle comes in tonight, deer season opens in 11 days!