martinchaen or Ren are free to post next, since APB would have had a turn by now, and Ace is after Chino.
As far as I'm aware, the PJSS and M1A are still in the rover and loaded, so Ace is free to pick one up and try to shoot it. He won't get the smartlink bonus though, since he does not own the guns.
Ace has the firearms group at 4, so you should already know what to roll.
The shotgun would be at Extreme range, the hunting rifle at Medium, so I assume Ace will go with the latter. He also has Flare Comp and Thermo, so the total Environmental Modifiers will be -3. Blind Fire no longer applies thanks to the spotlight.