That thing is made from aluminum and stainless steel. 32 ounces. Heavy. My .308 can weighs in at 28 ounces, including the muzzle device, and is considered to be a heavy can.

My guess would be that it is cylinder bore, no choke, and that there is a section of overbored barrel in there that is heavily ported for access to the expansion chambers. A conventional baffle system wouldn't work with all of the variations of plastince, cardboard, and fiber wads out there.

I'll pass. That being said, if someone buys one, I'd be happy to run a box or two of shells through it. I'm sure the giggle factor is high on that one.