Never heard of 'em, but that's not suprising.
There're more kits out there than you can shake a stick at.
For the life of me, I can't believe that they all make their own stuff.
My guess is, there're probably 4-6 manufacturers for the uppers and lowers, and they supply everyone else.
Do yer research and pay attention to the warranties. AR fans are rabid in their support, and bashing.