If possible create this box. With the following weapons of four types:
All BMGs, GL-X Corruptor and Incinerator, Brood Launcher and Brood Lobber.

PS: incinerator and Brood Lobber are in the box of Detonators, Snipers and Rocket Launchers

And also put as normal reward on the floor and boxes. And perfect too.
*Vot Brood Launcher, VBI GL-X Corruptor.
*Give plus mag for Brood Launchers and Fatal Attraction. Increase mag of 1 to 4 mags
And put these weapons back in the box.