I bought Ellis Brown's book recently and he included a flyer for Crown Press Custom Parts. I have purchased a top and bottom rib from him with no complaints. He sells Chomper Lump barrels and from the pictures in his catalog they are unjoined. Rifle barrels are listed at $1,850.00 per pair. Talk to Tom if you are interested - 440-275-1400 (work) or 814-774-5739 (cell).