the rca ability only applies to their main weapons
No it doesnt, Ive heard Improved rifling tommys with picked up LMGS kick ass.
Stop trying to be a smart ass, what I meant was that, their upgraded weapons like brens and stuff don't benefit from the +10, but just like with m1 carbines if you pick up a weapon, it gets the benefits but an applied upgrade doesn't.
No tym, carbines affect all weapons, axis weapons as well.