Wolverine WRAITH CO2 Stock - MTW VersionUser Manual You may be familiar with the WRAITH CO2 Stock that has been out for several years now. We had to modify it to create the MTW version of the WRAITH CO2 Stock. If you already have a WRAITH CO2 Stock, it will not work with the MTW, you need the specific MTW version of the WRAITH CO2 Stock. The Wolverine Airsoft Wraith: CO2 Stock gives you the great performance of HPA without the line. Perhaps the biggest resistance to HPA that we have heard