i have the best gun for spec ops survival: the fmg9 machine pistol. i was looking to try something other than quickscoping & machine guns (which are extremely expensive) & i bought the fmg. kicks ass up to round 17ish. it should hold you off til say 25 if you get up close.

plus unlike multiplayer, u can put a sight on all machine pistols (even the g18).

i would take an enemy assault rifle & install a shotgun on it when u can.

i easily reached round 21 with just that fmg on overpass

we should play mw3 tomorrow. i got all my elite drops back & am surprised that so many plp still play it lol