New for 2016, the SW22 features: Removable Interchangeable Match Barrel, Steel Reinforced Polymer Thumb Safety, Picatinny-Style Rail Included, Fiber Optic Front Sight, Adjustable Fiber Optic Rear Sight, (2) Ten-Round Magazines Included, Adjustable Trigger Stop, Stainless Steel Frame, Textured Grip Panels with Finger Cuts for Easy Magazine Removal.