interesting "reworks"

Tom H,

Your request for a source brings to mind the 30 M-1 Carbine.

Is the barrels external contour have sufficient material ?

The proper twist, Bore, and rifling dimensions?

Or possibly some other 30 cal. rifles?

Are, any available in sufficient quanity?

Or as last resort, How about mild steel barrel with a 30 cal rifled liner ?

Could any of these be resorted to ?

Just me "thinking again" .

ViggoG