The FLY 9 was developed with the same philosophy as the ULTRA series-- make a high-performance suppressor as light and compact as possible. The result is impressive, but requires some in depth discussion to really understand. The FLY 9 is configurable in two lengths: Long and Short. Our \"Long\" length is shorter than everyone else\'s modular suppressor\'s \"Long\" configuration, but just as quiet (and often quieter) than the best in this class. Our Long configuration is lighter by at least 20%, in many cases 35% or even 50%, than other full-size 9mm suppressors. It weighs only 7.9 ounces in Long configuration, and that includes the booster, piston, and spring. Our \"Long\" configuration at 7.0 inches is the same length or shorter than many others\' \"Short\" setups, but quieter. In its \"Short\" configuration, it\'s simply shorter and lighter than anything else out there. Including the piston, it\'s at 4.4\