@PieterCoetzee can't fight city hall.
nj is funny in that it has really strict gun laws but a strong gun culture, particularly in the northwest and south. we do what can with the cards we are dealt.
@OldGrunt I live in NJ. You can legally buy/build an AR. I have two, AR556 (ruger) and one i built (psa parts). They just can't have more than one evil feature. If it has a pistol grip that's your evil feature. After that, you can't have an adjustable stock, flash hider (but pinned comps/brakes...
300 blackout SBR with a can. that'll cover all your bases. i'll leave make and model to the fine folks here who know a lot more than me.
this was a mistake. now i got this stuck in my head.
https://www.pewpewtactical.com/best-300-blackout-guns/
Get the 2020 for teaching the grandkids and the CZ for yourself. Problem solved. 😁
CZ is probably better quality but the SA would work just fine for what you want it for.
If about equally priced I’d go for a CZ457.