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Posted: 8/23/2017 1:51:32 PM EST
Friend of mine got what appears to be a AR Build. The lower is a JD Machine with a serial number and all caliper engraving. The upper has a white X on the top of the rail near the charging handle. the front of the upper it looks like a milled out X where the gas tube enters the upper. the rifle doesn't have a gas tube or gas block. it has a free floating hand guard. the upper also has the CERRO forge keyhole stamp. im just trying to help him out.
i guess he just needs a gas tube and block to make this weapon whole. I personally would like to know who manufactured the upper. The barrel is 5.56mm and is 1 and 7. No manufacture markings that we found. any help will be appreciated.

Link Posted: 8/23/2017 2:20:12 PM EST
Link Posted: 8/23/2017 2:20:39 PM EST
[Last Edit: 8/23/2017 2:21:53 PM EST by DaveP1]
Cerro forged it, but if there is no manufactures mark, then it will be nearly impossible to actually figure out who did the final milling on it. A lot of companies that do their own milling use the Keyhole forge marked uppers and lowers, I have DPMS, I have a Delton, I have a Bushmaster, etc. I have a lot of uppers and lowers that I don't know who milled them, just know the company that sold them.
Link Posted: 8/23/2017 4:08:03 PM EST
Yeah that would have been nice. Next time I visit. I'll take a couple of pictures.
Link Posted: 8/23/2017 5:29:08 PM EST
Almost impossible to answer. Never seen an upper with the "X" markings you describe.
Link Posted: 8/23/2017 6:42:10 PM EST
[Last Edit: 8/23/2017 6:45:38 PM EST by epointer]
Red X Arms upper.
Link Posted: 8/23/2017 7:36:58 PM EST
Link Posted: 8/24/2017 6:21:28 AM EST
Wow, you nailed it. Thank you for finding that for us.
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