1/50th Ertyl Bobcat
Renegades Tunnel Rat Bomb Robot
30th Airtight accessories
Marauders mini gatling gun
Ammo string from a Terminator Salvation figure
Bottle from 25th Torch accessories

This is Tunnel Rat's newest toy. The T300 is a very capable unit. Not only is it able to enter any terrain without issue to handle any bomb threats, it can handle chemical and biological weapons with a little consultaiton from Airtight, and it can even defend itself fiercely if needed. During testing it was given the nickname honey badger after Lightfoot said the following:

"That thing doesn't give a #%$&! It goes where it wants and takes what it wants.