I'd like to get an AR-15. I really want a good semi-auto rifle and ammo seems to be in ready supply. I'm leaning towards a stock model (rather than building my own) for the first go around. Perhaps a Colt or S&W M&P, depending on my budget.
A 1911 would be nice as well.
I'd like to get another .22, but I can't find ammo for the ones I have now so no need to buy a gun that won't get used.