For this entire post's quandries, we're going to assume we're using Captain Rex.
1. Air Support. Can Captain Rex elect to not use the beam 2 keyword to instead make a gunslinger attack using the weapon on the Air Support command card?
1b. If Rex can gunslinger the Airsupport weapon after choosing not to use beam 2, can he apply beam 2 to the gunslingered attack? (I'm fairly certain i know this answer, but I figured I'd throw it in here for clarification)
2. Gunslinger states that you form an attack pool consisting solely of a ranged weapon that has already contributed to another attack pool. Does this allow or disallow firesupport, as it would seem that firesupport adds weapons to another units pool, and may not be part of the initial pool formation.
2b. Because gunslinger forms an attack pool with a weapon that has already contributed to another attack pool, if I firesupport a Z-6 into Rex's first attack, does he then get to shoot a Z-6 for his gunslinger attack, as it was part of the initial attack pool?