Sorry, I was short on time and only glanced at your comment.

The Mosin is bolt action, as you indicated.

Hi-Point sells carbine pistols but I didn't see any rifles, and I'm not familiar with Kel Tec's offerings I'm guessing they're like Hi Point? This matters because in some jurisdictions those are sold as 'pistols' and require the same permitting.

As for cheap AKs or Garands, I haven't seen any of those since before Obama's first term. They are less expensive than a Springfield or Colt made Armalite style rifle but not cheap. I'd like to know where you live because I'd be happy to snap up a cheap Garand.

The least expensive semi auto rifles are going to be .22 caliber. Then we could get into the argument of if a revolutionary force was armed with a bunch of semi auto rifles, how capable would they be. At that point it's moot because in the US they'd be going against the US law enforcement and military which will be far better equipped, that big ol' 'defense' budget at work.

Ultimately it's a difference in wording. If the OP had said firearms then I'd have said 150 million is conservative.