Bite hard. Bark loud. The Davidson Defense Bite ’n’ Bark 8.5-Inch AR-15 Complete Upper Build is built to run fast, hit hard, and keep coming back for more. Chambered in 5.56 NATO and rocking an 8.5" barrel with a 1:9 twist, this compact powerhouse balances precision with punch. What really sets it apart? A proprietary pistol-length +1" gas system that’s been fine-tuned for smoother cycling and reduced wear — backed by a 0.750 gas block journal for rock-solid performance.
Every upper is fully preassembled and test fired, so you know it runs before it ever hits your hands. Finished in sleek black and topped off with an aggressive muzzle to tame recoil, the Bite ’n’ Bark is ready for range days, truck guns, or serious builds that demand compact versatility without compromise. Drop it on your lower and let it eat.
Platform: AR-15
Caliber: 5.56x45mm NATO
Barrel Length: 8.5"
Twist Rate: 1:9
Gas System: Proprietary Pistol-Length +1"
Gas Block Journal: 0.750
Color: Black
Upper Status: Fully Preassembled & Test Fired
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