Great link from TWR!
just FYI. For the most part the make of the upper matters not. It doesn't have much to do with function or accuracy. You might have to face the threads a bit I hear. But I've yet to have to do that and have found only a rare barrel now and then that wouldn't hold MOA and under.
We can keep Larry Root and all his idiotic blabber and user names on here, but we can't get Ralph back..... Whiskey Tango Foxtrot, over....
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