Hi, im new to this forum and need some legal info. I own a Benelli M1S90 with pistol grip stock, that I bought in 1998 from a local sporting goods franchise (Turners Outdoorsman) here in California. I have been reading lately that when the assault weapon ban ends next month, it may be legal to put the 4rd extension on the weapon in addition to the pistol grip stock. Now, I have also read the due to import laws with the Benelli (which mine apprears to be made in Italy) there are restrictions regarding these imported shotguns. There was some talk about having a certain number of US made parts or the weapon is in violation of importation laws?? Since I bought the weapon from a reputable dealer in 1998 can i be assured that the right amount of domestic/foreign parts are in the weapon or am I going to have to take the shotgun apart and start replacing parts? can i add the mag extension after the Assault weapon ban ends? I am very confused and any information would be greatly appreciated.