when the first 10,000 pieces of the transitional 1924 changes to the 1911 were made, the barrels were coded with a 'k' on the bottom in front of the leg. A few years ago I bought several 1911 barrels from a deceased gunsmith's estate. a short while ago I sold the barrels for about $50 each. But the last one nobody wanted because the bore was not shinny enough. Recently I noted the 'k' under the barrel and searched for it's meaning. Which I found in 'coolgunsite.com' It was a barrel, I think , installed in the first 10,000 1924 transitional 1911s with serial number beginning at 7000000. That's when the 1911A1 started. My point is, I sold it last week for $325. So, don't knock it because it don't shine...…..