This AAC Blackout Flash Hider Installation Tool is an excellent solution for armorers gunsmiths and/or gun enthusiasts to quickly and easily install or remove any 3-Prong Blackout Flash Hider without marring its finish or damaging the teeth of a quick detach silencer interface when applying the required torque for the job. The tool attaches directly to any 3/8a ^2 Drive Tool and incorporates flats for use with a 3/4a ^2 Socket Wrench (both sold separately).Torque Spec: A 1/2-28 - 20-30 lb-ft 5/8-24 - 45-55 lb-ft A 3/4-24 - 45-55 lb-ft M15x1 - 30-40 lb-ft .595A-32 - 35-45 lb-ft M13x1 LH - 20-30 lb-ft 9/16A-24 LH and RH - 30-40 lb-ft