AR-12
I have AK’s and AR’s and the AK / AR hybrid made by Sig Sauer which is nice but a bit front heavy.
I don’t recommend pumps for most people because they tend to become unreliable under heavy stress. People short stroke them.
Course everyone says they have ice water for blood and they are pump experts and I’m full of crap. But I watched it happen to a highly skilled Ranger and if it can happen to him it can happen to you (me).
So my suggestion for shotgun is a reliable semi-auto. For example a Benelli or the tactical Mossbergs are good value.
Do you happen to mean the AA-12??