Daniel Defense 10.3" 300BLK Pistol Gas 1:8 S2W®

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  • Daniel Defense 10.3" 300BLK Pistol Gas 1:8 S2W®
  • Daniel Defense 10.3" 300BLK Pistol Gas 1:8 S2W®
  • Daniel Defense 10.3" 300BLK Pistol Gas 1:8 S2W®
MSRP: $289.00
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Daniel Defense 10.3" 300BLK Pistol Gas 1:8 S2W®

Manufacturing # / SKU 36-116-10.3-300BLK
Restricted Shipping No
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
Inside Finish Chrome
Gas System Pistol Length
Diameter At Gas Port .750″
Barrel Extension A4
Profile S2W® [Strength-to-Weight]
Weight 1.25

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.

All Daniel Defense cold hammer forged barrels are made from start to finish in our state-of-the-art facility located in Black Creek, GA. In keeping with our heritage of not cutting corners, all cold hammer forged barrels feature a forged chamber and highest quality exterior coating. Daniel Defense cold hammer forged barrels prove themselves to be more accurate and last longer than a barrel that has cut or button rifling.


Once this part is assembled into a complete firearm, it becomes a regulated item by the National Firearms Act (NFA). Please check with your local and state municipalities for any further regulatory requirements. It is the buyer’s responsibility to make sure they comply with all NFA rules and applicable laws.

All Daniel Defense products carry a 100% satisfaction guarantee against defects in original materials and workmanship. If your Daniel Defense product shows evidence of such defects, Daniel Defense will make every accommodation to fix, repair, or replace your product in the most expeditious manner possible. Daniel Defense does not warranty products or damage caused to our products by the correct or incorrect installation of other manufacturer’s products. Be sure to retain your sales slip as proof of purchase date when making a claim.

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