Slim yet highly effective, the 4.6x30mm/5.7x28mm ZEROED Flash Hider kills muzzle flash and allows for QD attachment of suppressors using an MP7(R)* profile flash hider mount.Includes:ZEROED 5.7mm Flash Hider | 1/2-28"Muzzle device shimsAll CMMG products come with our Lifetime Quality Guarantee.*MP7and HKare registered trademarks of Heckler & Koch GmbH(R). CMMG has no affiliation with HK, and CMMG products are not approved or endorsed by HK.