A good thing that has been happening as of the last 10yrs is that more and more police depts are using rifles/carbines instead of shotguns. I believe this was largely because of the North Hollywood Bank robbery.

I've worked on Colts and H&R M16s that a local dept got under the Gov't program. They left them as 20" guns but I made them all flat tops, added RDS optics, lights, A2 handguards and made the Colts semi-auto but the few H&Rs were left full-auto at their request. Another local Dept got some of the M16s from the same gov't program and is using 16" barrels on the ones issued to their regular officers and 11.5" for their part time SWAT officers. I view this as good thing for the officers issued these and I think nationwide it is slowly changing the publics perception of 'assualt rifles'. If police are using them for entry/CQB how are they magically bad for the citizen for defensive use in CQB? Same can be said for suppressors.