A quick look at the features of the Baton Airsoft BT-PIT Viper GBB Pistol by Fortress. The BT-PIT VIPER CO2GBB is the fourth edition in the BATON CO2GBB 2011 series. It's an upgraded version of the firearm used by the protagonist in JW4. The exterior parts have been almost entirely redesigned to mimic the full custom look. Additionally, it comes standard with the newly developed 2011 CO2 magazine Type-NL, enhancing the actual shooting performance.

This product is a CO2 gas gun that has been certified by the "JASG Japan Air Sports Gun Promotion Association", a manufacturing association approved by the Ministry of Economy, Trade and Industry. It has passed product safety inspections and complies with the revised Firearms and Swords Act, maintaining a power output of 0.98 joules or less. It also features a resin slide.

The gun employs the genuine TANIO/KOBA CO2 valve (patented) which ensures low fuel consumption and high durability. This results in reduced operating costs, a more stable initial velocity, and improved accuracy.