Depends on the class. 
 
My snipe class (iirc) I have deep penetration, bullet damage, and shit I forget. 
 
My assault class I have martyrdom, bulet damage, and the health one 
 
My M60E4 I have martyrdom, faster reload, and damage? I forget, lol. 
 
 
I wont be playing for a little while, I'll be busy for a few weeks.