“Had a 12k$ long range rifle as i understand it.”
I’m skeptical of that. It’d be a dead giveaway of him being a tool. More likely a regular AR-15. More than enough gun for the range involved.
This is alleged to be the weapon.
https://precisionrifleblog.com/2020/08/16/accuracy-international-axsr-review/
If this report is wrong I regret the error. Well off family.