The TechT G3 Bolt Engine totally reconfigures the Stock G3's method of operation. By doing so TechT was able to improve performance on every level. Lower operating pressure, shorter dwells, better consistency, etc. The new TechT G3 Bolt Engine comes with a lifetime warranty, and it is constructed of high-grade aircraft aluminum and goes through licensed anodizing method to make them both durable and great looking. The TechT G3 Engine includes a completely new "tool-less" back cap, as well as a jewel decal to let everyone know to stay out of your way.