/ Back Beretta 390 Gunsmithing Midwest Gun Works offers a full line of gunsmithing services for the Beretta 390 Shotgun. Our gunsmiths are highly trained and can provide you with a wide variety of services associated with your Beretta 390 shotgun such as: Firearm Inspection Cleaning Mechanical Repair Trigger Adjustment Choke Work Complete Beretta Factory Correct Restoration and More For more information on gunsmithing services please visit our Gunsmithing Services page by clicking here.