The 0dB Magnum .30 is designed for larger air volume suppression to accommodate the high power .30 caliber airguns. These units are machined using advanced cnc machines to give a unique look and tight tolerances for superior quality. The mounting end cap has a 20mm thread with a built in adapter to the standard airgun 1/2" UNF female thread. And the exit end features an integrated muzzle flip compensator which peels the turbulent air away from the exiting pellet.