Finally something for you to user the Maruzen P99 pistol into a carbine with this carbine conversion kit made by the company which you can get at RedWolf Airsoft for US$285.00 which makes it one of the more expensive pistol to carbine conversion kits in the airsoft market today... "The Walther P99 is a semi-automatic pistol developed by the German company Carl Walther GmbH Sportwaffen of Ulm for law enforcement, security forces and the civilian shooting market as a replacement for the Walther P5 and the P88.

Ergonomics were a key focus in the design of the firearm, and as a result, three interchangeable grip backstraps are included (small, medium and large) to accommodate various hand shapes and sizes; this feature permits most shooters a comfortable and efficient grip on the firearm. Also it features an ambidextrous magazine release incorporated into the trigger guard, very handy.

With this conversion kit allows the user to convert their P99 into a functional long arm. The kit includes man teen dabble back stock, sling mount and tactical rails which allows the user to attach any accessories, such as a tactical light or laser pointer."