"Assault weapons" are not assault rifles, as far as this discussion is concerned. They are just some semi auto weapons that "look militaristic". And anyway, assault rifles alone aren't very good at making a credible threat out of a civilian militia at any rate - "destructive devices", which are already heavily restricted (or banned altogether in some places) would be. Is there anyone pushing for the freedom to own a M72 LAW or .50 M2 Browning? Heh...
I already said that I thought the defence was stretching creidbility. But if a citizen militia is going to be credible it is completely impossible that it would be armed with handguns. And yes, frankly if you're serious about it then citizes should be encouraged to keep support weapons like mortars, and anti-tank. They should probably also own CBRN masks as well. Because you know war has moved on a bit since 1780.