If i cant break a gun down, and look at it inside and out, dry fire (on a snap cap) a few times, rack the slide a few times, and make sure everything's perfect, then I'm not buying it. If a shop cant agree to that, then they can kiss my @$$, and i will walk right out to a shop that will let me. To the OP, sorry that happened to you man, i would advise you to be more thorough before buying any new gun.
Good luck to you on that! Looking at the slide. racking the slide, dry firing the gun a few times....most gun shops would go for that,
However breaking it down? I don't think so!
There are many people that go to gun shops that have no clue how to strip down a weapon, but that doesn't stop them from trying.
Why would the gun shop risk handing over to you a brand new $300-$1000 gun so you can take it apart ?
You have some sort of card that says you know what you are doing?
What happens to the gun/shop if you "accidently" loose or damage the gun?
Are you going to tell the shop you'll buy the weapon if you damage the gun or loose a part?
How do they know you are actually going to buy the gun if you break it down?
Sorry guy.. this type of position puts all the liability is on the shop and none on you.
You mess up and you just walk away...leaving a mess and shop with a damaged non sellable gun!
You may be an ace at breaking down a gun, but how is the owner to know?
As I see it your wanting to put all the risk on the gun shop and assume none of the liability if you break or damage the gun.