Walther Real Action Marker P99 Air Pistol. Adds a whole new dimension of realism to your paintball wars! So exactly how realistic is the Walther P99? Well, it's commonly used with .43-caliber rubber balls for military and police training. It looks, feels and shoots with great accuracy just like the real P99 for virtual reality paintball! Just like the real thing: .43 caliber paint balls or rubber balls...fires at 290 F.P.S.; Comes in a foam-lined plastic gun case; Powered by one 12-g CO2 cylinder, or with an adapter, an 88-g cylinder; Double/single action; 9-shot capacity; Measures 7 1/4" long, 4" barrel length; weighs 2 lbs.; Order Today! WARNING: You must be 18 or older to purchase Air Guns. Walther P99 Real Action Marker Air Pistol, Green Slide.