LaRue Match Grade Upper Features The Larue Tactical Match Grade Upper brings the precision of LaRue s proven MGU platform to a large-frame AR-15 pattern receiver chambered in .308 Win. Designed to drop directly onto LaRue-pattern lower receivers this upper eliminates the fitting and headspacing work normally required to build a true precision rifle system. The 18 barrel s 1:7 twist rate is selected to stabilize a wide range of heavier .308 Win projectiles favored for long-range accuracy work giving handloaders and factory-ammo shooters alike room to tune a load to the rifle. A 5/8x24 threaded muzzle gives the shooter the freedom to run a brake suppressor or flash hider suited to the application so the upper can be configured for a quiet precision build or a lighter weekend range setup just as easily. Because the upper arrives ready to run shooters can simply add a quality optic and begin confirming zero without additional gunsmithing or headspacing work on their end. Feeding it match-grade factory ammunition or carefully developed handloads is what unlocks the sub-MOA performance at 100 yards LaRue designed this platform to achieve. The large-frame MGU heritage behind this upper means it carries the same reliability and build consistency that has defined LaRue s precision rifle lineup for years down to the same large-frame bolt and barrel fitment standards. Dropping a finished upper onto an existing lower also saves the time and cost of outsourcing a custom barrel fitting making this a practical path to a dedicated precision rifle for shooters who already own a compatible lower. For shooters building a dedicated .308 Win precision platform the Larue Tactical Match Grade Upper is available for sale at GrabAGun. LaRue Match Grade Upper Specifications Manufacturer: LaRue Model: Match Grade Upper Caliber: .308 Win Compatible Hosts: AR-15 Barrel Length: 18 Twist Rate: 1:7 Muzzle Thread Pitch: 5/8x24 Available At: GrabAGun