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WHSmith, that sounds too familiar :) Where I work at, we have started to make AR lowers (well, let's just say 80% of it) I don't work on anything that deals with the CNC stuff though, I'm just one of the young clean-up guys there... but from what my supervisor was saying, all the major manufacturers use the exact same programs, tooling, and even vices. EVERYTHING to where you have such minimal tolerances there would be no reason to pay extra for a bushmaster than say... some brand you never heard of. In the programs, it's even as precise as "1/8" bit @ 2500 RPM, then 5000 RPM on extraction" and all the companies do it the same.

Maybe I'll keep you guys updated on the progress.
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