MAG AoL Supplement Question

[Vertigo he/him]

I'm looking to begin a game in Era 2, and have read the Alloy of Law supplement for the Mistborn Adventure Game. However, I've missed something important. What stat is used for firing guns? Not in duels, just in regular combat. I feel as if I've read it, but I can't seem to find it where it is. I remember something about the Narrator setting the Difficulty of the shot, or if the target is trying to avoid the shot, then they roll their Physique. But what do you use to shoot a gun?

[Argel he/him]

I think it's the same basic mechanics used for ranged weapons from the MAG, just with some new options thrown in. I think it's Physique.

[Vertigo he/him]

Cool, thanks!