StreetSweeper.

[RedVexHK]

I've found one iffy mod for an automatic shotgun but it's more like a modded rifle... I'm wondering if anyone would try to make a street sweeper automatic shotgun.

http://world.guns.ru/shotgun/sh09-e.htm

this shows what they look like... maybe a modification of the existing shotgun would work..

[DCstar]

There is a regular striker in the 20th Century Weapon Pack, but no Streetsweeper variant. The only real hurdle is the animations.