He brought his SIG Sauer P320.
We shot it.
And we pronounced it good.
(Maybe I can get him to post a review in the comments.)
Second– a very good A-to-Z telling of how the AR15/M16 family of rifles and carbines came to be, with much myth-dispelling and hard facts. Should be read and understood and bookmarked. The genius of the great Eugene Stoner (my fellow Marine) shines ever brighter.