No I have no affiliation found the website after reading BBC News specifically talks about manufacturing an AR 15 Whether they are commercial advocacy non profit seems irrelevant If they publish information relevant to wiki topic then can it not be used a reference If a third party article described a method of milling the lower receiver of an AR 15 at home then it too could be referenced The project s key focus appears to be circumventing legislation and they use the AR 15 as a specific example The Wikipedia page lists the manufacturers and then goes on to detail at length the global legislation controlling the distribution of the AR 15 Both these sub heading seem directly effected and relevant to the referenced article