Almost finalized my design for this and wanted to get some feedback before moving ahead. I wanted to provide something that had more "girth" than the 1/2" freedom fighter product, but less than the insane GG&G size. So this has an outside diameter of 0.6" (5/8") and feels really good.
the final version will have knurling and will be manganese phosphate finish. If you have any thoughts please let me know! I am assuming that these will also fit the turkish clones, which I will confirm before making any such claims.