Nice. It's worth it getting diamond stuff and getting to prestige master. Shotguns are easy as hell. Will probably take you around 500 kills each. If you haven't already done the ARs, they're a pain in the ass.
Soul Silver FC - 4469 3620 2054 / Diamond FC - 1033 3883 0634
I got a couple gold ARs but i usually did an AR as a break from smgs. Shottys do seem easy and just from playing around i have started all of them. The combat and shield are the ones i dont really want to do