A few months back, I bought a .45 Colt cylinder from a poster here. It appears to be a factory conversion cylinder. It is marked on the cylinder under the ejector star "W<> D 6-77 .45 Colt". It is the correct length for a M25 frame. It had a very shallow rebate on the rear of the cylinder to clear the frame lug. I tried it in my M25 and it wasn't quite right, but when I tried it in my 1950 .45 target it was very close, only requiring a slight deepening of the rebate at the rear of the cylinder. Everything else is perfect - carry up, lockup, B-C gap and end shake.

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Tom
1560