The best way to tame the report of your 5.56mm/Centerfire .22 caliber firearm? It’s with the ZEROED 556 of course. With the standard length profile of 6.5 the ZEROED 556 keeps the noise down without beating up your wallet. Budget friendliness doesn’t mean sacrificing quality though. Through-hardened 17-4 stainless steel baffle construction with a nitride finish allows the ZEROED 556 to resist corrosion and provide a full auto rating to combat load strings of fire between cooldown periods. – To maximize compatibility out of the box each suppressor includes two direct thread HUB mounts a 1/2-28 and a 5/8-24 mount. If you prefer QD mounting systems the 1.375-24 HUB threaded suppressor body allows you to use a compatible QD mount/muzzle device system of your choice. For easy disassembly the ZEROED 556 features a 3/8 square drive in the front end cap and 7/8 wrench flats on the included direct thread mounts. – All ZEROED suppressors are made 100% in house by CMMG in our facility allowing for maximum quality control and affordability. – Material: Heat Treated 17-4 Stainless Steel – Attachment: Direct Thread / HUB Mount – Diameter: 1.58 – Minimum Barrel Length: – 5.7x28mm: 5 – 5.56mm: 10.5 – Included In The Box – Suppressor – (1) 1/2-28 Direct Thread HUB Mount – (1) 5/8-24 Direct Thread HUB Mount – Caliber .22 ARC 4.6x30mm 5.56x45mm 5.7x28mm – Finish Nitride – Weight 17.4 oz/15.2 oz w/o mount – Length 6.5/6.2 w/o mount