With his Custom Stubby M4 Pistol project now using the Wolverine Airsoft's Inferno, Booligan Airsoft shows some the other stuff he used for this, such as the InGrip Regulator... "I teased you guys last week with my stubby M4 pistol, now let's take a look at it's full CO2 powered goodness, using parts from Wolverine Airsoft."