If it is anything like the first (or like any other video game) you can only scavenge for ammo from weapons of the same make laying on the ground.
you have to pick up ammo (a blue bag on the floor by enemies) 100 times
Im not for sure about the glitch but if u need more ammo just get Scavenger and keep picking up ammo and if you get Scavenger Pro you get Extra MAgs.
You cant get infinite bulletsin CALL OF DUTY MODERN WARFARE 2 but you can do it on CALL OF DUTY WORLD AT WARlook it up on google you can also get xp in Private matchs
Pick up someones gun and kill them with it
Ammo and Invincibility Enter the following while playing the game. UP DOWN UP DOWN LEFT LEFT
NO you cant but u can in black ops
There are no ammo pickups, but you can pick up other peoples' guns if they died.
1 unless you have scavanger, then when somebody dies you can pick up a second one
Because all the people are nOObs with bad connection
Get into a Tenth Prestige lobby or pick it up off the ground
There are no cheat codes and the Intel don't give you cheats like in modern warfare but you can buy mods on eBay that can give you unlimited ammo but mods can get you kicked off online xbox, ps3 enything you have also mods might screw up your consul though
Look for weapons with green coloring around it because it means it has ammo so go up to it and press"E" to pick it up.The weapons with red coloring don't waste your time with those guns because they don't have ammo so whats the point about picking up a gun with NO ammo!