Better tell Wikipedia that they have it all wrong then;
(from Wikipedia)///// The HK416 is an assault rifle designed and manufactured by Heckler & Koch. It is a modified version of the American M4 carbine with many changes, most notably a new gas operating system from the Heckler & Koch G36\\\\\
This is getting a little bit idiotic.
Did you read my post number 6 where I said the 416 was probably gas operated.
You were talking about the HK-91.