Like I said - no one in the military (referring to US DoD) uses the term "assault" with any weapon type. It's more descriptive of tactical task than anything else. The only possible exception I can think of would be the SMAW (which is a rocket-launcher).
Of course you can find examples of OEM's which use that term (at least those headquartered outside the US)...that has absolutely no implications for the doctrinal terms and informal jargon used by active military personnel.
If you had spent any amount of time with a combat arms unit, I don't think you'd be arguing of this point.
