Quiet Operation - The Hush Bolt was designed to have a less abrupt "pop" or "crack" that has traditionally been associated with Open Face Bolt Markers. The TechT Hush Bolt has a quieter, more muffled sound signature. This means your field position is given away less, and communication on the field becomes easier than ever before. * Increased Efficiency - The combination of the Even-Flow face and our unique o-ring configuration allows the Hush Bolt to seal the routing of air directly through the face. This results in less air being leaked around the bolt itself- which means far less wasted air. The Even-Flo Face also allows for extremely uniform airflow- this means tighter groupings and better accuracy. * Radial Ramping Face - The Hush Bolt features a Radial Ramping Face which allows for less ball stack clipping, which means less broken paint in your breech.