For what it's worth... if they never again produce the "police" model... for years and years most police departments equipped their officers with standard riot configured wingmaster shotguns. Each came with a simple bead sight, four shot tube, and a plain stock w/o any checkering. I've seen them with both 18 and 20" barrels - most that I'm familiar with came with an improved cylinder bore...
I'd take anyone of them into a close quarters situation and be very confident with it any day of the week... That police model did have an improvement or two - but mostly it was just marketing, touting the basic Wingmaster design...
By the way, if you make a point of scanning Gunbroker or other sites for one of those old Wingmasters, you can count on an occasional one coming along that's in very good condition and might even be very reasonably priced if we can get past the current virus situation and have weapons pricing return to something approaching a normal situation (whatever that is..).