With 55gr soft point bullets, the over-penetration risk is minimal, almost non-existent.Jago668 wrote: ↑Fri Aug 10, 2018 1:14 pm Also stepping out of the shotgun box you can get a S&W MP15 Sport for right around your budget. If you are willing to watch gunbroker you could probably get it for less. An adjustable stock AR15 gets pretty short. An extra $50 and you can put a Bushnell TRS-25 on it. That is 30 rounds, and I can't imagine them having to reload. If you weren't worried about slugs going through walls, the .223 isn't going to be worse and can sometimes be better. Also about a pound heavier than pump shotguns so should still be easy enough for them (6.5 lbs).
This is another great suggestion, especially with the adjustable stock or perhaps a fixed LEO entry stock.
Chas.