The Ruckus 12.5-inch Carbine-Gas 1:8 6.5 Grendel AR-15 Complete Upper Build from Davidson Defense is optimized for precision and reliability. It features a 12.5-inch barrel made from 4150 CrMoV steel with a medium profile and a 1:8 twist rate, delivering consistent performance with the 6.5 Grendel caliber. The upper receiver is constructed from forged 7075-T6 aluminum, equipped with a forward assist and dust cover.
A 10-inch freefloat Keymod handguard, made from 6061-T6 aluminum, provides mounting versatility while minimizing weight. The low-profile 0.75" gas block ensures smooth operation, while the AR-15 GI birdcage flash hider helps manage muzzle rise. The robust bolt carrier group is built to 6.5 Grendel II specifications, featuring a nitrided finish for durability. This complete upper build is designed for shooters seeking a reliable, compact option for their pistol configuration.
Caliber: 6.5 Grendel
Barrel: 12.5", 4150 CrMoV, Medium Profile, 1:8 Twist, Carbine Gas, Nitride Finish, 5/8x24 Thread
Upper Receiver: Forged 7075-T6 Aluminum, Anodized Finish, Includes Forward Assist & Dust Cover
Handguard: 10" Free Float KeyMod, 6061-T6 Aluminum, Black
Gas Block: 0.75", Low-Profile Steel, Slide-On, Phosphate Finish
Muzzle Device: AR-15 GI Birdcage Flash Hider, 5/8x24 TPI, Manganese Phosphate Finish
Bolt Carrier Group: 6.5 Grendel II, 9310 Steel Bolt Head, 8620 Steel Carrier, QPQ Nitride Finish
Charging Handle: AR-15/M4 Mil-Spec, Aluminum, Anodized Black
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