StriderWolf is able to draw basic firearms and other weapons. Look more at his earlier works.
Furrywriter.

 Fallimar is another.
Furrywriter.

I don't know how to link to them, but Baroncoon is one of the best with firearms, and Rabbi-Tom is another that's pretty good. Rabbi is actually doing something right now, to where if you get him one years worth of NRA membership, he'll draw your character with a gun, so for 2, I would imagine he would do you both. A year is like $10 a piece I believe.