Built by Bill Wilson before Wilson combat was founded in 2000, these shotguns were marketed to swat teams, this particular example even had cage code markings on the top of the receiver 

Custom Built 870 with side saddle, mag extension, custom ghost ring sights, custom safety releases, custome tube springs and beefed up action bars, Old school surefire handguard with the Updated Surefire LED head to keep up with the times 

comes with 150 rounds of buckshot 

wanting to trade for a PCC like a stribog or AR9 , something along those lines