I spend _a lot_ of my life interacting with firearms, gun culture and accessories. I do so in Illinois where suppressors are illegal and I’ve never seen one here.

Indiana is a bike ride away and has some of the loosest gun laws in America. I shoot suppressed there all the time.

I believe that manufactured suppressors actually are hard to get in the US in a way that is untraceable to the original purchaser, which makes them hard to get in illegal jurisdictions.

Guns are much more broadly sold and less restricted so I agree that they tend to be very available.