Back in the 70's S&W decided to make a run at the total law enforcement market.
They owned the revolver market that most all LE carried, made handcuff,s ammunition, holsters, tear gas launchers and other gear, so they thought they'd take on Remington's lock on the LE market with the 870.
First, S&W offered the Model 916 which was a version of the old Noble shotgun.
It was so bad at one point S&W discussed actually recalling therm all and buying them back to protect their name.
After that S&W imported the Howa Model 3000 pump, and the 1000 semi-auto.
As I recall they offered the 3000 and 1000 in aluminum and steel receiver models.
Remington ate their lunch and S&W dropped the guns "To get back to our core business..... revolvers".
Most law enforcement was gun shy of other brand shotguns after the Winchester 1200 and 1300 debacle and stayed with the Remington 870.
The 3000 did have a brief "cult" following among individual police officers.
After S&W dropped the 3000, Mossberg picked it up for a couple of years then they too dropped it.
Howa themselves imported it under their own name a year or two then discontinued it.
The bottom line on the 3000 was that it was a very good quality shotgun, but just didn't have anything to set it apart enough to interest buyers since it was nothing more then a copy of the Remington 870.
Parts and some accessories like stocks and magazine extensions are still available from Gun Parts Corp and LSG Mfg in Texas.