Officers ought to have firepower at least equivalent to what they will face if they go in harm’s way.
Check it out:
To anyone who has even a cursory understanding of arms in a combat situation (even an academic knowledge, which is all I claim), it is obvious that a semi-automatic rifle such an an AR-15 is a far better tool to mitigate the threat of an active shooter than a pistol, such as a Glock 23.
Rifles have greater range, higher-capacity standard-capacity magazines, and better practical accuracy under most conditions.
Nonetheless, there is a never-ending shriek from untrained, fact-deprived citizen control supporters that “battlefield weapons” do not belong in civilians hands, even those of the police. Obviously, AR-15s are not battlefield weapons (citizen control cultists do love to blur the line between selective fire and semi-automatic firearms, don’t they?), but a firearm of choice when responding to a known active-shooter situation .