Absolutely perfect CQC mech for anti infantry use. I can definitely see this as a security bot for police, companies, PMC. lightweight, easy to carry, cheap to manufacture, he'll doesn't even use a built in weapon as its main firearm. I REALLY like that.
I really REALLY like this. Would be a devastating foe for soldiers.
Might as well add something like ammo drums for prolonged battle since P90 burns through ammo hella fast and maybe a mini rocket pods for extra firepower, might decrease the mobility a bit but won't affect overall performance that much, just sayin.