How can a tell a USMC sight hood from any other one?
I've read (but don't know if it's true) that only the USMC version was intended to be left on the rifle while using the rifle?
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How can a tell a USMC sight hood from any other one?
I've read (but don't know if it's true) that only the USMC version was intended to be left on the rifle while using the rifle?