I think all gun makers should do this. Wasn't Barret firearms restricting sales of it's rifles where citizens were unable to buy them? It puts the police agencies in the same boat as the rest of us and it's good that they have "skin in the game" when it comes to gun control. I got slammed on another site when I mentioned that I thought it was a good thing when the New York SAFE act included NY police agencies in the 7 round magazine limits.
IF Glock, Smith and Wesson, Sig and others restricted sales in places like Chicago and New York I would be a happy camper.