Manufacturer Item Number: 64139
This 51-Tooth Blackout flash hider incorporates AAC's groundbreaking Multi Indexing for Targeting at Extended Range (M.I.T.E.R.) sound suppressor mounting system. M.I.T.E.R. mounts feature a 5-postion adjustable zero system to minimize point of impact shift when switching between suppressed and unsuppressed firing and, used in conjunction with AAC's 51T ratchet mount, makes for a very solid, secure silencer attachment method. Adds 1.75" to the barrel and utilized the 51T MITER Ratchet Mount. Torque wrench is need for installation - approximately 20-30ft.-lbs.