If I remember correctly, engine heat sinks are considered built-in and should cost no weight. But they still affect weight in this game. Would love a mod that changes those to zero weight.
Machinegun and Flamer DPS seem waaaay over the top in MW5, if the in-game stats are to be believed. If my calculations and memory are right they are 10 and 20 dps right now!
+1 I feel that they really missed out on not adding loot crates during regular missions. I got all excited when I saw that in the tutorial, it would be a fun mechanic.