Analysis of information sources in references of the Wikipedia article "Ferguson rifle" in English language version.
My com tech tells me it took centuries for Old Earth to advance from crude, fuse-fired smoothbores to anything remotely like this. In fact, she insists no one on Old Earth ever produced one that incorporated all of these features, except for something called a 'Fergusson Rifle,' or something like that.
It really was an ingenious design, he thought-one that virtually duplicated what had once been called a 'Ferguson Rifle' back on Old Earth.