Quote Originally Posted by SethB View Post
]
As for Stoners later designs, he had already given up any rights to his direct impingement design and so had to pioneer other ideas. I don't think the AR 18 is much better than an AR 15.
I'm not sure that Stoner had any rights to give up re the direct impingment design.
I believe direct impingment had been used designs prior to Stoner's the AR series, e.g. Ljungman AG42, so I am not sure that Colt could really have precluded him using it again if he so desired.