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<blockquote data-quote="Perplexed" data-source="post: 1668096" data-attributes="member: 7157">I&#039;ve heard of M-14 parts turning up in a M1 Garand, since some parts of the trigger assembly are fully interchangeable between those two rifle designs.&nbsp; After looking over your data sheet, and the comment you made about the metal parts having a uniform finish, I&#039;d be inclined to think you have an arsenal rebuild.&nbsp; The SOP at the arsenals was to rebuild a rifle, then send it on to the parkerizing station, though sometimes there were exceptions.&nbsp; The rebuild process wasn&#039;t a rigid one.&nbsp; As for the CMP changing out parts, they do that only if a part is obviously broken or so worn out it doesn&#039;t perform properly (or where they&#039;re putting together a Correct Grade).&nbsp; After M1 production ceased, many of the parts from the different manufacturers were brought together at the arsenals and used as part of the rebuild process.&nbsp; So it&#039;s not at all unusual to find HRA or other manufacturer parts on an SA rifle that&#039;s been through the rebuild process, though HRA parts would be more common since in the 1950s and 1960s they had a larger supply of new HRA parts than they did WRA or IHC parts.&nbsp; If the finish matches on all the parts, I&#039;d say it was a rebuild; if the HRA parts don&#039;t match, then it could be a sign of a later replacement.But I&#039;m hardly an expert, so I could be totally off-base with my comments.&nbsp; Duff&#039;s books are an excellent source, as is the CMP forum where the M1 is concerned.</blockquote>

[QUOTE="Perplexed, post: 1668096, member: 7157"] I've heard of M-14 parts turning up in a M1 Garand, since some parts of the trigger assembly are fully interchangeable between those two rifle designs. After looking over your data sheet, and the comment you made about the metal parts having a uniform finish, I'd be inclined to think you have an arsenal rebuild. The SOP at the arsenals was to rebuild a rifle, then send it on to the parkerizing station, though sometimes there were exceptions. The rebuild process wasn't a rigid one. As for the CMP changing out parts, they do that only if a part is obviously broken or so worn out it doesn't perform properly (or where they're putting together a Correct Grade). After M1 production ceased, many of the parts from the different manufacturers were brought together at the arsenals and used as part of the rebuild process. So it's not at all unusual to find HRA or other manufacturer parts on an SA rifle that's been through the rebuild process, though HRA parts would be more common since in the 1950s and 1960s they had a larger supply of new HRA parts than they did WRA or IHC parts. If the finish matches on all the parts, I'd say it was a rebuild; if the HRA parts don't match, then it [B]could[/B] be a sign of a later replacement. But I'm hardly an expert, so I could be totally off-base with my comments. Duff's books are an excellent source, as is the CMP forum where the M1 is concerned. [/QUOTE]

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