M16 useless? You obviously are not smart enough to comprehend why its so close to the sickle/Bowie in almost every level. Its hands down my fav combo atm especially in Shang Ri La. .... I always buy the bowie first in any map and pair it with a m16. Burst, knife, burst, knife, works all the way till the high teens.
IMHO the pm63 is useless... Besides if you think of it the wall guns are not balanced. They give you the same choices with one always being the better of the two. M16 is a toss up since its the only gun of its type on the map. We need a stoner to pair the m16 but keep it with a low clip size high power rate.
I just don't agree with the semi-automatic thing. If they had made it full auto considering military m16's have full auto, then yeah i would use it. but i dont agree with semi auto. just not my thing.