On the other hand, many interpret Stirner as totally amoral, without any concept of rights. Though he excoriates the state in his essay, one gets the impression that a good Stirnerite egoist would have no qualms about using the state as his property if given the chance, and exploit others without mercy!
It is not Stirner himself, but certain anarchists he influenced, who present a coherent case for rights based on egoistic expediency. Benjamin Tucker started as a proponent of natural rights, but later in his career changed to a Stirnerite perspective.
From the beginning of Liberty, Tucker placed emphasis on the rights of the individual and individual sovereignty. This natural rights approach may have been influenced by Lysander Spooner who at the commencement of Liberty was still living and contributing articles to it. Reminiscent of Spooner's outlook, was the statement in an 1882 issue that "there is but one single kind of 'legal' freedom; and that is simply the 'natural' freedom of each individual to do whatever he will with himself and his property, for his body here, and his soul hereafter, so long as he does not trespass upon the equal freedom of any other person." ...
So Tucker preceeded Rand in combining egoism with a universality principle, transforming an amoral philosophy into a moral one.
Although Tucker maintained that he had not changed his fundamental opinions since he had begun Liberty, it is obvious that by the late 1880s his defense of Anarchism had changed from one asserting a natural rights justification to one asserting the Stirnerite version of egoism. By early 1888, Tucker was no longer defending property as a right, but rather claimed it to be only a social convention. Having abandoned natural right as the basis of Anarchism, Tucker replaced it with the concept of equal liberty as the touchstone of his Anarchism. "It is true ... that Anarchism does not recognize the principle of human rights. But it recognizes human equality as a necessity of stable society." "... the only compulsion of individuals the propriety of which Anarchism recognizes is that which compels invasive individuals to refrain from overstepping the principle of equal liberty. Now, equal liberty itself being a social convention (for there are no natural rights), it is obvious that Anarchism recognizes the propriety of compelling individuals to regard 'one' social convention ..." - Carl Watner, Benjamin Tucker and His Periodical: Liberty