Managed to have some fun with this build, though I've never had so much frustration with a weapon.
For your own sake never use this gun (w/akimbo attachment).
6 feet of range max and the bullets trace the enemy.
Excuse the aim, trying to use mnk to prep for MW4 and when I go back to controller, it's like my first day on earth.
After the most recent patch/update removing a majority of the glitched guns (THANK YOU), I've noticed certain gun builds won't work and will just give you a stock SVA 545. (Happens at :30 seconds in) It's happened to me three times so far, definitely does this on the WSP-9 with conversion kit, and then a random selection of some attachments.
I'm messing with some other combos to see which other guns have this issue.
Doesn't seem to affect that many weapons, but hopefully they can fix this eventually.