Daniel Defense 5.56mm Government Profile 10.3" Barrel - 1:7 Twist Rate - Carbine-Length Gas

Daniel Defense 5.56mm Government Profile 10.3" Barrel
1:7 Twist Rate - Carbine-Length Gas

Build or upgrade your short-barreled rifle (SBR) or AR-15 pistol with the legendary durability and precision of the Daniel Defense 10.3" 5.56mm CHF Barrel with Low Profile Gas Block. Engineered to MK18 specifications, this barrel is Cold Hammer Forged from 4150 Chrome Moly Vanadium steel, creating a dense, flawless grain structure that guarantees acceptable accuracy and long service life under high-volume firing schedules.

Built for extreme operational environments, the barrel features a hard chrome-lined chamber and bore for smooth extraction and maximum corrosion resistance, paired with a Mil-Spec heavy phosphate exterior finish. Complete with a factory-included .750" low-profile gas block and carbine-length gas system, this Government profile barrel delivers smooth cycling, ideal dwell time, and unmatched reliability out of the box.

Features

Cold Hammer Forged Construction:
Forged from high-grade 4150 Chrome Moly Vanadium steel to deliver ultimate structural integrity, minimal throat erosion, and superior barrel life.

Chrome-Lined Chamber & Bore:
Internal chrome lining resists heat buildup, carbon fouling, and wear, ensuring reliable feeding and smooth case extraction during extended strings of fire.

Low-Profile Gas Block Included:
Comes pre-fitted with a precision .750" low-profile gas block designed to fit seamlessly beneath most free-float M-LOK or Picatinny handguards.

Fast 1:7 Twist Rate:
Optimized with a 1:7 twist rate to effectively stabilize a wide range of 5.56mm NATO and .223 Rem bullet weights, including heavy 69gr to 77gr duty and match rounds.

Standard 1/2x28 Muzzle Threads:
Features industry-standard 1/2x28 TPI muzzle threading for easy compatibility with flash hiders, muzzle brakes, and suppressor mounting systems.

Specifications