Gun Wiki - if you can believe such a thing exists! - claims it as a feature.
http://guns.wikia.com/wiki/AR-15
I suppose the cops could remove the "safety" in the interests of "safety?" Makes about as much sense as anything else they do.
http://guns.wikia.com/wiki/AR-15
Quote:The AR-15 is a lightweight, magazine-fed, gas-operated, air-cooled, shoulder-fired rifle.
Most AR-15 models generally utilize the semi-automatic fire control group - the selector switch has options for SAFE and FIRE.
I suppose the cops could remove the "safety" in the interests of "safety?" Makes about as much sense as anything else they do.