I need to make an ACE style ejector, like kimber or sig Sauer, they attach to the barrel. Or possibly extend a 38 super extractor. I have two if these barrels. I plan to mill a flat spot 1", just below the 9:00 . I was thinking of grinding down an Allen wrench, pinning it in. Any ideas? If anyone has a similar system, how far from the barrel face is the ejector extended? And what is the thickness? One of The barrels I bought, 20, $25 . one is Italian, not sure where this one is from, the Italian one has a better ramp. a colt ACE, made to be used with the floating chamber. Maybe I need to make it long like this. The firing pin is a 1/4" bar that strikes the top of the rim fire cartridge .