kidvett, What an unusual marking! Doubs is absolutely correct on the 28 Infantery Regiment Machine Gun company. I do disagree on one thing. Looks to me the armorer picked-up the wrong punch and stamped a "G" frirst then overstamped the "R". If you look at the overstamped letter and compare it to the "G" you will see it is one and the same. w/r Jeff Noll
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