The newest release from Guerrilla Air; the Machete. This ASA features built in dovetail rail milling and a large open channel for screws to fit almost all applications. It also has the air outlet coming from the bottom so that it does not interfere with your wrist when switching hands. It's last feature is the slight angle that is built into the ASA. The angle provides more room to bring your elbow in comfortably when shouldering the tank.