It was in the plans for a while and I pulled the trigger, cheesy pun, on it early last year. Here's the trip in pictures:
what we started with, a vltor vis-1
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Standard 5.56 opening. notice the "lip" on the bottom.
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Just for reference, this is how a standard ejection port would handle a .50
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Measure 5, 6, .... cut once
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Clean up time. the shell deflector ended up coming off later for a deep clean
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