C4 is underused and it's funny to kill people with it imo. Put it on a flag in domination and just wait until you're losing it and let it loose. Also, back to the whole lightweight thing. I use it for my UMP a ton because if you die a lot while rushing, watch and see how many times it's because when you sprint around a corner you couldn't aim down your sights fast enough, it was my downfall. With lightweight pro I can run around and I don't have to hit down on my left stick to stop running to shoot, it's a pain in the *** to do that. It's not that good without marathon if you ask me, but if you run a lot in general it's alright.