Does he want an all-shooty crew or just a significant ranged core?
Ten Thunders have Katanaka Snipers, Pathfinders and Samurai. Archers too, but they get a lot of bad rap. With Shenlong those shooters will be focusing as a (0) or out of activation via peasants. Mei Feng is beater extraordinaire who will provide negative flips against other gunlines and beat anyone who comes close. I don't know if there are any bonkers synergies with other masters.
I wouldn't build a TT crew of just shooters, but I've played gunline heavy games and done well. So yeah, we have cool guns but if he wants a faction where even the janitor is packing a six shooter then look elsewhere.