Daniel Defense 5.56mm Government Profile 14.5" Barrel - Mid-Length Gas - 1:7

Daniel Defense 5.56mm Government Profile 14.5" Barrel - Mid-Length Gas - 1:7 

Upgrade your primary carbine with the duty-proven reliability, smooth cycling dynamics, and extreme barrel longevity of the Daniel Defense 14.5″ 5.56mm Mid-Length Gas 1:7 Government Profile Barrel. Considered the definitive sweet spot for general-purpose combat carbines and popular 16-inch pin-and-weld builds, the 14.5-inch barrel preserves critical terminal velocity for 5.56x45mm NATO rounds while maintaining an agile, rapidly maneuverable weapon profile. Whether configuring an all-around defensive carbine, a duty patrol rifle, or a suppressed tactical setup, this barrel delivers match-grade mechanical accuracy and relentless operational endurance.

Every Daniel Defense barrel is manufactured entirely in-house at their state-of-the-art facility in Black Creek, Georgia, using proprietary cold hammer forging (CHF). Under intense hydraulic force from opposing carbide steel hammers, certified Chrome Moly Vanadium (CMV) steel is formed around a precision-ground mandrel to simultaneously forge the chamber, lands, and grooves. This cold-working process aligns the molecular grain structure of the steel, eliminating internal microscopic defects and yielding the most concentric chamber and consistent bore achievable. The interior is treated with a heavy-duty hard chrome lining that resists heat erosion and harsh propellant fouling, while the exterior receives a rugged Mil-Spec Heavy Manganese Phosphate coating for supreme resistance to corrosion and abrasive field conditions.

A primary mechanical advantage of this configuration is its mid-length gas system. Paired with a 14.5-inch barrel, the mid-length system provides a longer pressure curve compared to harsh carbine-length gas systems. This lowers chamber unlock pressures, reduces cyclic bolt velocity, cuts carbon fouling, and produces a noticeably softer, flatter recoil impulse for faster follow-up shots and reduced wear on critical internal components. Machined with a classic Government profile, an industry-standard .750-inch gas block journal, 1/2x28 muzzle threads, and an A4 extension with extended M4 feed ramps, this 1.5-pound barrel is engineered to stabilize heavy 62gr to 77gr duty and match projectiles via its fast 1:7-inch twist rate.

Features

Cold Hammer Forged (CHF) Precision Mandrel Manufacturing:
Forged under intense hydraulic pressure around a precision mandrel to create an ultra-consistent chamber, bore, and rifling profile with an aligned molecular grain structure for unmatched accuracy and barrel life.

Optimized Mid-Length Gas System:
Provides a smooth, balanced pressure curve that reduces cyclic bolt velocity, tames felt recoil, decreases wear on the bolt carrier group, and minimizes gas blowback during suppressed fire.

Ideal 14.5″ General-Purpose Combat Length:
Delivers the ideal balance between high muzzle velocity and agile handling, serving as the benchmark platform for standard duty weapons and legal 16″ pin-and-weld carbine builds.

Mil-Spec Chrome Moly Vanadium (CMV) Steel:
Machined from certified CMV alloy steel, delivering extreme tensile strength, fatigue resistance, and thermal tolerance under sustained strings of fire.

Heavy-Duty Hard Chrome-Lined Bore & Chamber:
Features an industrial hard chrome interior lining that prevents chamber corrosion, facilitates smooth case extraction, and dramatically slows throat erosion.

Mil-Spec Heavy Manganese Phosphate Exterior Finish:
Coated in a durable, non-reflective phosphate outer finish that provides lasting defense against humidity, salt air, surface abrasion, and aggressive cleaning solvents.

Fast 1:7″ Twist Rate:
Optimized to stabilize modern combat ammunition, including 62gr M855/M855A1, 75gr BTHP, and heavy 77gr Mk262 Mod 1 match-grade cartridges.

Standard .750″ Gas Block Journal & 1/2x28 Threads:
Features a .750-inch gas seat compatible with standard low-profile gas blocks and standard 1/2x28 TPI muzzle threading for direct integration with top muzzle devices and suppressor mounts.

A4 / M4 Barrel Extension with Extended Feed Ramps:
Equipped with a factory-installed M4 barrel extension with extended feed ramps to ensure reliable, hang-up-free cartridge feeding under rapid semi- or full-automatic fire.

Daniel Defense 100% Satisfaction Guarantee:
Manufactured 100% in-house in Black Creek, GA, and supported by Daniel Defense’s comprehensive manufacturer guarantee against defects in original materials and workmanship.

Specifications