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AR15.COM
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4/22/2004 2:01:18 AM EDT
I have a 1973 vintage SP1, five digit serial number, ending with an X (30,000X for example).
I called Colt and they haven't got a clue (imagine that). I talked to a local gunsmith and he had just checked out some LE trade - in SP1's and he said they all had the same X.
I can only figure that the X is for FET exempt rifles sold to law enforcement agencys.
Any other ideas?

Thanks
Match223
AR Sponsor