It's an $18 V3 Sentinal clone from Fasttech, in all brass, with the firing button lock ring removed (they seem to sometimes be defective and not lock correctly, so I was uncomfortable with that) and replaced the lock ring with a 3/8 brass compression cap from Home Depot. It not only perfectly matches, but is much sturdier than the original locking ring and allows the mod to stand up on a table much better.
Since I like my original Protanks and they have a problem drawing air on some mechs, this one included, due to fitting flush against the top, I added an Ego to 510 adapter with some air holes drilled in it, and added a brass Ego beauty cone also with air holes drilled into it. I also expanded the air holes in the Protank bases slightly. I put a rubber washer between the cone and the top cap of the mech purely for aesthetics as there was a slight gap, and it came out looking like a gold light saber. My next move will be to sand down the pair of Protanks I use as they are brass under the chrome.
Manly it is. It is pretty much indestructible, simple, very heavy and looks pretty good even when scuffed up and used rough.