I think these have been discussed here before. These are the "economy" barrels from TOW. From the last discussion about these it was mentioned that TOW has some sort of nondisclosure agreement with the maker. It looks like they are supplying them with a rougher finish, at a discounted price.
Having said that, I personally would not be a big fan of that rifling configuration either. It would interesting to hear from someone who has actually shot these.