I have located a used mini 14 LE (with bayonet lug and flash hider) guy don't know how old. said it is in perfect condition. wood stock, 18.5 in barrel, blue. does this gun have the 'pencil barrel' or one of the newer heavier barrel? anything I should look for before I go inspect this gun? tks to all. also, were the newer 'ranch rifles' the only ones to get the 'heavy barrels? again, my thanks.