The Broxa. It's a friendy noobie gun. Good power out of the box. I've been to games populated entire with new players with Broxas and Krakens shooting like 400 FPS out of the box and I had tons of welts due to newbies not knowing proper fire control.
But like the others say...JUST SAY NO and buy a proper gun instead. It'll be more worth you money in the longer run.