When purchasing Uncle Mike's or any other brand from eGoods365.com store, you can be sure that (a) you are purchasing from US based company with the most responsive and friendly customer service; (b) an authentic, not a counterfeit and not a refurbished product.
Most pumps and autos, including Beretta 390, can use the rear QD base which screws into the inletted receptacle in the stock. The front base comes with an adapter to fit the magazine cap. However, it does not fit Browning 2000, Winchester 1400, Ithaca 37, Savage 30, Sears 21, or Stevens pumps.
