I was passed down a chopped up British 303, supposidly a "jungle carbine" that's has been sporterized unfortunately. It has the right numbers on receiver, metal areas grinded/removed on barrel and receiver. M470,England on the butt stock metal clip, left side. Flash hider has been removed or cutoff. Would it be worth taking it back to original issue standards? Thanks for help guys, just want to know exactly what I have here...