Yes, BUT . . . . again . . . . what does it have to do with proficiency with a rifle?
Bottom line: they wanted to say they were giving officers M4's. But they do NOT want:
1. To spend the money to arm 9,000-odd officers with these rifles, or
2. To spend the money to train that many officers, or
3. To put out the money for ammo to train that many officers, or
4. To cope with what they see as the liability problems with arming that many officers with "military assault weapons."
That's what this is about. It was a showpiece from the start. They're not serious about doing anything about crime, including arming their police. Now, admittedly, arming cops better is about 99th on my list of things to do about crime in Chicago, but they want credit for doing it, so it becomes an issue when they weasel out of doing it.