When I bought my Mossberg Persuader (I think they're called Cruisers now), there was a pistol grip in the box with the shotgun.
They look cool with a pistol grip and I do have a pistol grip on mine. They're a bear to shoot with a standard pistol grip though!
The pistol grip I have on mine is from Knoxx Industries. It's called the COP stock and can be viewed here:
http://www.knoxx.com/NewStyleKnoxx/T...rt/COPtech.htm
These do work quite well, BTW...