I've got two the hero formula and personally I don't rate that vendor role very highly. In my experience you need braced frame on that weapon for it to be effective,because the rate of fire is so high. The NL Shadow 701X is a better option if you're looking for a high rate of fire scout with explosive rounds as it has a magazine size of 21,it also can role with explosive rounds and braced frame on separate perk noudes unlike the hero formula.
English
-
You can't buy a Shadow though. It's a rare drop to begin with and good luck getting RNG to drop a god roll. Poor comparison.