That version? It was created by a psychotic imbecile (who lives with his mommy, I bet) and was full of WP:QUOTEMINING and attempted to game the system in order to represent M16 in best ways possible. It's still possible to incorporate some of his edits (the ones in which he didn't game the system) but only after inspection of sources one by one. Furthermore, he deleted tons of sourced information. Only when I took an edit break he felt safe to emerge from his hiding and vandalize the article. You might not be familiar with such tactics and the article gave a good impression.