So my new favorite cousin inlaw is a Marine well retired. But he want to know is there anyway to buy a real m4 class 3 like he had in iraq. We checked out suppressors to because he also had on of those off brand. We checked out the local dealer he showed us some aac cans and he had a mp5 class3 and few others. No m4 though. He asked for a mil spec but wasn't what he meant. Also a p90 would be good he loves those for some reason lol. He said if not all he wants than is a dependable ar15 platform. But with a oversized charging handle since his hand was injured by a IED. Just want to check what's out there for him . I don't know Shit about non bolt action rifles.