CMMG ZEROED 30, Suppressor, 30 Caliber, 17-4 Stainless Steel Construction, Nitride Finish, Black, Hub Compatible, Includes 1/2x28 and 5/8x24 Direct Thread HUB Mounts 11DB005 Built for .30 caliber or smaller centerfire cartridges, the ZEROED 30 suppressor brings maximum sound suppression and robustly overbuilt quality at a no-nonsense price. Full 17-4 stainless steel construction and a nitride finish provides durability with superior corrosion resistance and a combat load full auto rating. With an overall length of 6.5", the ZEROED 30 provides the best suppression for anything .30 cal like a .308 Win DMR, 300 BLK PDW, or 7.62x39mm carbine. The ZEROED 30 suppressor makes no sacrifices on features either. Included with each suppressor are two HUB compatible direct thread mounts, giving you flexibility out of the box with whatever the host firearm is threaded and allows you to use other direct thread mounts or your preferred HUB compatible QD mounting system. For easy disassembly, the included direct thread mounts feature 7/8 wrench flats and the suppressor features a 3/8 square drive in the end cap.