The LTAC Barrel Extension Torque Tool [Multi-Caliber] is the most versatile tool you'll ever need for working on upper receivers.
Fits any standard vise jaws up to 6.00 Inch long.
Allows adjustment to point upper receivers in any direction you'd like.
Fits:
AR15 Uppers
Raven 9MM Uppers
Raven 5.56 Uppers
Raven .300 AAC Blackout Uppers
Raven 7.62x39 Uppers
AR10 Uppers
Raven 7.62x51 Uppers
Should fit any other firearm that accepts AR15 or AR10 barrels.