SpeedQB feature the Heretic Labs Article One TYPE-S and you can learn more from their website.. "The Article One TYPE-S is a complete, competition-ready platform, manufactured in USA by Wolverine Airsoft. The TYPE-S is out-of-the box ready, equipped with the INFERNO Gen 2 HPA Engine, Heretic Labs Tank Grip with integrated STORM Category 5 Regulator, and Spartan Class upgraded control board."