Note: The Genesis V3 pistol in 300 Blackout has a very short barrel. This firearm has a significantly reduced dwell time when compared against a similar firearm with a 16″ barrel. Because of the wide variety of commercial 300BLK ammunition, and our desire to build a user friendly and reliable firearm, it is specifically tuned to cycle “Supersonic” ammunition. Therefore, it likely will not reliably cycle ammunition with a rated muzzle velocity of under 1000fps. Subsonic ammunition is specifically intended to be fired through a suppressor , and adding a suppressor that generates additional back pressure (as most do) will generally restore reliable cycling.
Please note that firing subsonic ammunition out of a 7.5″ barrel reduces muzzle velocity to well under 800fps and will deliver the same amount of energy as a common 380ACP round. The V3 Pistol can be tuned for Subsonic 300BLK ammunition, however this will dramatically increase felt recoil and muzzle rise, especially when firing supersonic ammunition.
Please don’t hesitate to call our technical line (1-833-CALL-HD1 Option 2) for any additional details.