I am pretty sure they still sells them at Brownells' too.
If that does not work out, try Kolar Arms. They used to make a thing called the Kolar Compensator that was essentially the same thing. The chokes and bodies were interchangeable with Cutts. The only difference I could see was the Kolar used thinner slots and looked a little nicer. Both were noisy as hell to stand nearby someone shooting one on a skeet field.