David, there is an old saying in the gun collecting world; "buy the gun, not the story". Meaning, never trust what the seller tells you about a collector type weapon. Always do your homework as Orlando said and you will decrease the chances of you getting burned in a purchase. Unfortunately you can still do all the due diligence humanly possible and still get burned. You can take what Orlando says as gospel because he is one of out most knowledgeable authorities on the M1rifle here at Milsurps.com.
As for me, I have my doubts on the rifle in that I believe the milled trigger guard is too early for the serial number. That said, there is another saying we collectors use; "never say never and never say always". Meaning anything is possible. Even if the trigger guard is too early nothing says it may not have been on hand to be used at the time of build.
Good luck with your purchase and please keep us posted.![]()