Not sure. I bought it from a gunsmith friend of mine. He couldn’t remember either. It looks fine to me. It has good stakes on the gas key and an o-ring on the extracter spring. I couldn’t find any flaws in it. It did have a couple letters stamped into the side of the carrier though. I don’t remember them now but will post when I get home.
I just looked and it’s stamped RG. So it’s an RGuns BCG. It appears to be chrome lined. From what I’ve read by Googling, their CS is stupid bad, but no one says anything bad about the quality of their parts.
Don’t mean to be an asshole but I’d like to point out
145 is a bit soon to think the rifle is ready for serious social use. I’d also be a bit leery about using a Double Star LPK, but that’s just me. I have not heard of any line of Eotech products that didn’t suffer from the battery compartment issue.
Otherwise it seems like a decent build. Good work for your first attempt