I guess Colt got the idea that, perhaps upon hearing the term M4gery, that it was time to offer the public the real thing. That is, if the real thing were semi-automatic and had a 16 inch barrel. But hey, it says “M4 Carbine” on the receiver, and it’s got a pony on it, and who doesn’t want a pony?
Actually, I almost got a Colt AR-15 carbine once. It was in 2004, right after the ban expired, and a local gun shop had a few samples marked “Restricted: For Law Enforcement and Government Use Only.” I thought it would have made a nice souvenir for what once was and never should have been. I’m actually kind of sorry now I didn’t get it, because I haven’t seen them since.