How easy is it to buy a gun?

[Dyedinthewoolliberal]

I want to see how long it takes to prove q point

[Buzz cook]

1. Could be a day, could be a couple weeks

In Washington state, if you have a concealed carry permit, the waiting period is waved.
If not, the official waiting period is a week. But many shops draw that out to 2 weeks.

[sinkingfeeling]

2. Go to a gun show and pay in cash?

[sarisataka]

3. I hear they hand them out for free at most places

Seriously though it isn’t difficult if you have a clean background. Fill out a form, wait while the dealer calls to get a NICS check, pay for the purchase. I have seen the process take as little as fifteen minutes. It can be longer but less than an hour assuming the purchase is approved.
Whether you are allowed to take the gun home at that point or have to wait depends on local regulations.