Fitting has three outer thread dimensions, ¾ NPT, 13/16-16 and ¾-16UNF. Accepts JÄGER Re-Direct Flash Hiders, JÄGER "Versa-Brake" System, Gestalt Verdampfen Compensator and Ferragane Mini.  Inner dimension of 5/8-24RH.  Made from hardened carbon steel with Anti-Rust Black Oxide matte finish.  Fits the following platforms*: Most threaded .308’s, .30 Caliber, M-14, AR-10, Ruger Mini-30 and 300 Blackout, among others.   * To ensure proper fit, confirm your rifle's thread dimensions prior to purchase of this part.