Ruger Ar556 in 350 legend. Day time scope with poor men’s night vision clipon Pard NV007. It’s basically handheld monocular witch could be attached to almost any scope eyepiece trough adapter. Adapter could stay on the scope with out interrupting day time use and monocular could be attached accordingly to your needs in a second.
Up to bat first 458 socom ar15 platform.....don't ask me why I just like big guns.....rarely use it unless I know I'm going in for a biggun.
Second which is my favorite 300 blackout with a digital infrared scope...shooting 190 grain hollow points.....it just flips em.