Welcome to Mechspeccs! Verdict? Sorry, but it's a bad build on this variant. The CN-9D can do the same, but better because of fully actuated arms. Can do XL300 and another ton of ammo. Look for 'Davion's Pride' (or similar) in the according sub forum. YLW either does AC20 or dual UAC5. Will give additional feedback if needed when I am not on my phone.
More like this: At least upgrading the armour to Ferro as long as u have the slots to do it. I think is low in ammo for a dual mount, also u have the left arm at full armour, i think is better to strip off a littel armour there, it will be compensated with the quirk.