If they dont have a gun in stock can they send it to the store first or do you have to buy it online first

If it is on line only you buy it on line and have it shipped to the store then they do the federal firearms paper work at the store if it is a gun they stock they can order it and ship to the store

Ask the clerk.. be sure there aren't extra charges.

Yes

Yes thdy silly. Yes they will

Order from store. Youbwill pay the shipping charges.