I was using LakeShore Carbide endmills and mentioned this test project idea to Carl at Lakeshore; before I knew it, I had an email from LakeShore Carbide's shipping department - Carl (against my wishes!) supplied the end mills for this test. Please trust his generosity did not influence my review.
The proof is in the pudding, so you'll just have to watch to see how it all ended!
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Machining AR-15 Lower Receiver: https://www.youtube.com/watch?v=svtIp2wzl1A
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