If only there were 8.
I wonder how many of you forgot "Impact" was a profiency in mw3 when you clicked.
[spoiler]I BET YOU THOUGHT THIS WAS A DESTINY POST, DIDN'T YOU?![/spoiler]
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In real life I'm 99.9% sure it's the Barrett. It's an anti-material rifle meant to stop tanks. There have been debated on whether using it as an anti-personnel rifle violates moral codes. In MW3 it was the AS50