its loosely related to the armsan family of firearms. armsan was a joint project between silah and khan shotguns. armsan makes the weatherby pa-459 and several others under various names including the guardian. the parent to these models is the armstac rs-x1. most parts are interchangeable so you can pick up traditional style stocks, barrels threaded for beretta modil chokes in lengths up to about 28 inches, rifled deer barrels and forearms with pic rails. good luck getting those goodies though.

http://www.armsan.com/default.asp?la..._id=4&prodID=2
this is the sporting version

http://www.armsan.com/default.asp?la...d=79&prodID=27
this is the parent to your shotgun