Does anybody know who machines the Brownells M4 receivers? Are the done in-house or out-sourced?
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Does anybody know who machines the Brownells M4 receivers? Are the done in-house or out-sourced?
Senior Member
Aero Precision machines them. Brownells confirmed so on TOS.
ETA: Aero machines the lowers, the uppers are machined somewhere else.
Last edited by Five_Point_Five_Six; 05-18-19 at 10:00.
Member
I don’t know who machines them but I just used one and it was GTG.
Member
My LGG carries Aero. I have done several builds and have been completely happy with them. Brownells front door is 52 miles from my driveway. I would not be afraid to use anything with Brownells name on it.
kwg
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