It really saves your ass in CQC too. I found the last gun never did enough damage, but it was still decent at distance shooting. You'd think without having body armor, this guy would be good up close.. I like how it's at least quiet.. I've mastered the 'transition' - going from primary to pistol.. many a times I've taken people down while they're reloading. I love my N52
I like the sniper rifle as it.. the only other thing I play on a regular basis.. I play Spec Ops 90% of the time, then sniper.. I play a little medic and assault/support, but I find the support to be a little boring.. the distance accuracy sucks, then up close you just drop to the ground all the time.. boring for me.. i like the action.
As for spec ops, I like getting under bridges, setting charges on either end of it from the bottom so you can't see them on the road.. as tanks and such drive over, you blow up the front and end, catching them int he middle stranded, or taking out a lot more. It's the only way to really be effective in taking out a bridge and enemies..
I also stick C4 to trees so they're higher up.. when a tank goes by.. you blow it.. if someone is in the gunner's spot, they're dead.. if you have enough C4, you just get the tank since they're looking at the ground, not the trees.
Aside from that, I wish there was a way for the Ops to pick up unused C4 instead of just wasting it.