Now available at Airsoft Atlanta is the Wolverine Inferno for Version 2 Gearbox Premium Edition... "The Wolverine Inferno is based off the previous SMP system and is designed to drop into nearly every popular gearbox on the market with no modification. And, they are constantly altering their design to include even more gun models. External components are small and easy to fit into the stock, grip, or handguard of your gun.