Why would any gun shop owner sell a gun to anyone other than the person that wants the gun and risk their FFL license, fines, and possible imprisonment. Put yourself in their shoes.
That's certainly the way this shop is thinking. It's not the way I think.
If someone's telling me
up front that a sporting shotgun or a target rifle is a gift for a family member, chances are very good that it's not a straw purchase. Someone doing a straw buy (except for some truly inept attempts I've seen) is going to do their best to hide the fact that the gun isn't for them.
Heck, every 4473 I sign
could potentially be a straw purchase. Am I going to give myself an ulcer over it? No. I'm going to make sure I'm making reasonable efforts to stop the ones I suspect, but one will surely get by sooner or later.
I had one woman who took up two hours to select a gun. She was all panicky about self defense from some guy who she claimed was looking at her funny in a parking lot, and after going over every conceivable option, she settled on one. Six months later, the gun was traced after being found in the car of a felon 1500 miles away. The felon in question was a drug dealer who'd been working with her husband. I'd have never seen that one coming.
Another case involved a convicted felon who'd fudged the background check system and gotten into law enforcement. Not wanting to try his luck twice, he had his wife do the paperwork on a couple of purchases. Although he assisted, she was definitely involved in the selection process, so we had no reason to suspect.
I've certainly put the stop to more than a few. Usually, they're pretty obvious, and I make it clear that I will report and assist in prosecution if I ever see them again. Sooner or later, word gets out that you're not an easy mark for that, and the problem largely goes away.