I've carried one badge or another for a shade over thirty years. I have consistently advocated against any law that treats one class of citizen any differently from another. That includes laws that create stiffer penalties for the assault or killing of any 'special' class of citizen, including police officers. Why? Because I believe 'equal protection under the law' means just what it says.
If you're talking about NFA weapons, individual officers are subject the same hoop-jump as everyone else. Last year I acquired some 14" 870's for the Department (Surprise-our new Caprice PPV's have a much lower headliner!) and I had to submit forms repeatedly and wait, wait, WAIT before the Department could pick them up.
So , we can't just run out and buy full autos or saw the barrels off our shotguns on a whim.
“Nine-tenths of tactics are certain, and taught in books: but the irrational tenth is like the kingfisher flashing across the pool, and that is the test of generals. It can only be ensured by instinct, sharpened by thought practicing the stroke so often that at the crisis it is as natural as a reflex.” ~ T. E. Lawrence