Daniel Defense

10.3″ 300BLK, PISTOL, 1:8


300 Black out

Out of stock

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The Daniel Defense 10.3” 300 Blackout S2W® barrel is designed with a strength to weight profile (Daniel Defense’s Heavy Barrel), a 1:8″ twist rate, and a pistol length gas system.

Cold Hammer Forging of barrels has been known for decades to produce the most accurate, longest lasting rifle barrels obtainable. The Cold Hammer Forging of barrels is accomplished through intense hydraulic pressure applied at opposing angles by carbide steel hammers. During the hammering process, a mandrel is inserted into the bore while the carbide steel hammers shape the barrel around the mandrel creating the chamber, the lands, and the grooves. In addition to the aforementioned benefits, the Cold Hammer Forging process creates a defect free bore and the most consistent chamber possible.

Caliber 300 BLK
Barrel Length 10.3″
Manuf. Process Cold Hammer Forged
Twist Rate 1:8
Muzzle Thread 5⁄8×24 TPI (Threads Per Inch)
Material Chrome Moly Vanadium
Outside Finish Mil-Spec Heavy Phosphate
Gas System Pistol Length
Diameter At Gas Port .750″
Barrel Extension A4
Profile S2W® [Strength-to-Weight]
Weight 1.25
Manufacturer Daniel Defense


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