Hi all, posted this a few months ago and did not really get anywhere with is so I am asking again.
I have an AR15 lower marked RGM Inc. with what seems like a custom serial number (USMC 0X), marked "model marksman."
All I have been able to find out about the company is that they went out of business years ago and they were based out of Pennsylvania.
The lower is supposedly a pre-ban. I am trying to somehow verify this.
Tommy down at Georgia Precision said they sold them years ago, and I thank him for what little background info he was able to give me.
Anyone else purchase one of these puppies years ago?
Anyone have similar serial numbers?
Might it be impossible to actually verify pre-ban status of this lower?

Thank you all again for any help,
NM