Hello there....I just discovered something interesting.....
I had a sniper and my secondary was 2x machine guns...
I was in close battle situation so i pulled out my secondary and killed one guy 70nth level ( I am 4pr 35 l ).... and on top of hes body i pressed by mistake the (f) key and i took hes AK - 47 ....and the beauty of this it was that is had replaced my secondary ....So i had one barret and one AK - 47 at my command..!!!! And i felt like i found something interesting....After that i spent hours of playing and i made some killcams that other could not explain...:P(changing weapon before final kill)...
Anyway i am sure some guys out there surly new about it but as always
i put all my ideas and help back to the ones are helping me...
Have fun.......