I have a barrel marked SA F6535448 NM 9 54 A214A "DOD stamp" The NM looks like it was stamped later as it is not in line with the rest of the lettering and below the NM is a "P". I always thought National Match barrels were stamped down by the gas cylinder? This barrel is on a CMPicon gun TE 4.75 MW 1.5


Thanks
Chris
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