Something to improve your Maruzen P99 compact airsoft pistol which you can get at RedWolf Airsoft... "Featuring authentic markings and its very own unique serial number, the Shooters Design Maruzen P99 Compact CNC Slide is an absolute beauty. As usual this Shooters Design slide is CNC milled from a one piece 6061 Aluminum block, thus ensuring high durability, and superb craftsmanship. Iron Sights Not Included."