M1014 FMJ, I never get called a noob when using this gun, I don't know why, because it's a very versatile shotgun, and can kill from a distance. When I kill someone from close, the sheer power of the FMJ actually make my game lag a little and freeze for a few milliseconds, I find that very amusing =D sort of like PTRS v. Dog in World at War.
---------- Post added at 01:38 AM ---------- Previous post was at 01:32 AM ----------
Another, one of the best secondary weapons in my opinion is the Stinger, because it does what it is supposed to do with complete perfection.