You'll see advertisements for guns and ammo on what we call 'billboards' on the road (it's an advertisement on a flat surface about 30ft long I'd estimate, and maybe 10ft high. usually along the highways). We also get these ads in the marketing flyers you get in the mail, or see them in magazine print ads.

Gun ownership here is a bit more of a formalized process, so in general if you're clear to purchase one we'll trust you with a firearm, with few exceptions. The background check has a finite window after which it fails open, then if there is a rejection after the fact, an agency will show up to collect the firearm.

I could buy a shotgun while shopping for grocery items in the same store [0]. Also, the place up the road that sells fishing bait and hats and things also sells pistols, rifles, bows, hunting supplies etc. If you ask to hold one they just hand it to you, unloaded with a trigger lock or zip tie through the action of course.

[0] - https://www.youtube.com/watch?v=h193H4LP5os

Just online and possibly on interstate billboards, in my experience.