GEN3 Mass Driver Comp Standard For G17The Strike Industries Mass Driver Compensator represents a quantum leap in compensator design. Current designs have largely been unchanged since the 1930s. It?s about time for something revolutionary. The Mass Driver name is inspired by the idea of theoretical mass driver engines in space travel. By ejecting mass, an equal and opposite reaction is generated propelling the space vehicle forward. Threaded Barrels: Yes, the Mass Driver Comp is compatible with most GLOCK aftermarket threaded barrels. We've tested with majority of the popular brands on the market but not all.