Does anyone know who makes this upperScreenshot_20200802-212001.jpg
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Does anyone know who makes this upperScreenshot_20200802-212001.jpg
Sent from my Vivo XI using Tapatalk
That's a Mueller Brass forge mark.
Black River Tactical
BRT OPTIMUM Hammer Forged Chrome Lined Barrels - 11.5", 12.5", 14.5", 16"
BRT EZTUNE Preset Gas Tubes - PISTOL, CAR, MID, RIFLE
BRT Bolt Carrier Groups M4A1, M16 CHROME
BRT Covert Comps 5.56, 6X, 7.62
Thanks.
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