NBS 6.5 Grendel 20" Parkerized Spiral Fluted Heavy AR-15 Barrel 1:8 Twist

This NBS AR-15 20" spiral fluted heavy parkerized 6.5 Grendel barrel has a rifle length gas system with a 1:8 twist. Our 6.5 Grendel parkerized rifle barrels are made from the finest 4150 Chrome Moly Vanadium and precisely rifled for high accuracy at a great price. All finished barrels go through a 100% inspection process. Inspections Equipment includes CMMs and Air Gauges for the bores as well as visual and machine inspection. We recommend Defender 107 gr., Federal Gold Medal Berger 130gr. Specifications: Weight: 3.5 Length: 20" Profile: Heavy Barrel Twist: 1:8 Finish: Parkerized Material: 4150 Chrome Moly Vanadium Thread Pitch: 5/8 x 24 Caliber: 6.5 Grendel Type II Feed Ramp: M4 Flutes: Spiral Flutes Gas System: Rifle Gas Block System: 0.750 Gas Hole Diameter: 0.099 Classification: Barrels Platform: AR-15 Threaded: Threaded