Pistol Grip Shotgun

[Uncle Barty]

Looking for one simialar to this model. Got any suggestions on where to get one other than the internet...?
Mossberg 500 Special Purpose Rolling Thunder pump shotgun features 3" chamber, heat shield, barrel stabilizer, pistol grip only and bead sight. Drilled and tapped for scope mount, 6 shot extension and matte blue finish with black pistol grip and forend.
Action Pump
Gauge 12 GA
Barrel Length 23"
Capacity 5 + 1
Chamber 3"
Length 33 1/2"
Weight 6 3/4 lbs
Drop N/A
Stock Black Synthetic
Finish Black Matte