You will be much better off using a carbide drill like the one offered by HB Industries. The weld will EAT regular drill bits. Got one on Amazon for a little less. There is a group on AR15.com that is passing a few along after using them.
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Thu Sep 15, 2016 7:52 pm
waglocker
Location: Ohio Joined: Fri Nov 9, 2012 Posts: 3924
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