No sources anymore after Jim at Distant Thunder left us. The extractor arms can be easily made from any Ballard extractor, but the sliding round part will need to be fabricated by a decent machinist. I've occasionally found a couple on Ebay, but I check constantly for Ballard parts for my spare parts bin. I have spares, so if one pops up there I'll post the link here since I don't need more. Or you can check there daily until one pops up.