One Horse 5.56 NATO 16" SOCOM Profile Barrel

Mid-Length Gas System - 1:8 Twist - Versatile Performance The One Horse 16" SOCOM Contour Barrel delivers precision and reliability for tactical, defensive, and range applications. Chambered in 5.56 NATO with a 1:8 twist rate, this barrel offers excellent stabilization for a wide range of bullet weights from 55-grain to 77-grain projectiles. The mid-length gas system delivers smoother recoil impulse and enhanced reliability compared to carbine-length systems, while the robust SOCOM profile ensures durability under high-volume shooting without excessive weight. Built to Mil-Spec standards from 4150 steel, the barrel features 1/2x28 muzzle threads for flash hider or suppressor attachment. Precision-machined for seamless integration with standard AR-15 upper receivers. Made in USA.

5.56 NATO Chamber with 1:8 Twist Rate

The 5.56 NATO chamber accepts both 5.56 NATO and .223 Remington ammunition, providing versatility for different ammunition types and applications. The 1:8 twist rate represents the optimal balance for stabilizing bullet weights from 55-grain M193 to 77-grain MK262 and everything in between. This twist rate proves fast enough to stabilize heavy match bullets for long-range accuracy while not over-stabilizing light bullets that could experience jacket failure at high velocities.

Mid-Length Gas System

The mid-length gas system positions the gas port further forward than carbine-length systems, providing longer dwell time and smoother operation. This configuration reduces felt recoil, decreases bolt carrier velocity, and extends component life compared to carbine-length gas systems. The mid-length system proves particularly beneficial when suppressed, as the reduced gas port pressure prevents over-gassing that causes excessive wear and harsh recoil. The smoother recoil impulse improves follow-up shot speed and accuracy.

SOCOM Profile for Balanced Performance

The SOCOM (Special Operations Command) profile features a government-contour diameter under the handguard with a heavier profile forward of the gas block. This design provides durability and heat resistance where needed most—at the gas port and muzzle—while reducing weight under the handguard. The SOCOM contour delivers an optimal balance between lightweight handling and sustained-fire capability. The profile maintains accuracy during extended shooting sessions that would cause thinner barrels to experience heat-induced point of impact shift.

4150 Steel Construction

Manufactured from 4150 chrome-moly-vanadium steel, the barrel provides exceptional strength and durability. 4150 steel represents the military standard for AR-15 barrels, offering superior resistance to throat erosion and maintaining accuracy through tens of thousands of rounds. The material's high tensile strength withstands the pressures generated by 5.56 NATO ammunition while maintaining dimensional stability.

1/2x28 Muzzle Threads

The barrel features 1/2x28 threading—the AR-15 standard for muzzle device attachment. This threading accepts A2 flash hiders, muzzle brakes, compensators, and suppressors designed for .223/5.56 platforms. The threaded muzzle enables customization based on intended use, from flash suppression for tactical applications to recoil reduction for competition or sound suppression for training.

Precision-Machined to Mil-Spec Standards

Built to Mil-Spec (Military Specification) standards, the barrel features precise chamber dimensions, proper extension timing, and correct gas port sizing. Precision machining ensures drop-in compatibility with standard AR-15 upper receivers, bolt carrier groups, and gas systems. The barrel extension is properly indexed and torqued, while the chamber is reamed to exact specifications for reliable feeding and extraction.

16" Length Compliance and Versatility

The 16-inch length represents the minimum barrel length for rifles under federal law, eliminating NFA restrictions while providing sufficient velocity for 5.56 NATO ammunition. This length achieves over 95% of the velocity potential of 20-inch barrels while offering improved maneuverability. The 16-inch barrel proves ideal for general-purpose rifles, home defense, tactical applications, and hunting.

Versatile Bullet Weight Compatibility

The 1:8 twist rate stabilizes the full spectrum of commonly available 5.56 NATO ammunition from lightweight 55-grain ball to heavy 77-grain match bullets. This versatility enables shooters to select ammunition optimized for specific applications—lightweight bullets for maximum velocity and flat trajectory, or heavy bullets for wind resistance and long-range accuracy—without requiring different barrels.

Made in USA

Manufactured in the United States with American materials and craftsmanship, the One Horse barrel represents domestic quality and precision manufacturing. The One Horse 16" SOCOM barrel delivers Mil-Spec reliability, versatile performance, and balanced handling—the perfect foundation for a high-performance AR-15 build.

---

SPECIFICATIONS

• Manufacturer: One Horse
• Caliber: 5.56mm NATO (.223 Remington compatible)
• Barrel Length: 16 inches
• Barrel Profile: SOCOM Contour
• Twist Rate: 1:8
• Gas System: Mid-Length
• Material: 4150 Steel (Chrome-Moly-Vanadium)
• Muzzle Thread: 1/2x28 TPI (Threads Per Inch)
• Chamber: 5.56 NATO
• Standards: Mil-Spec (Military Specification)
• Platform: AR-15
• Gas Port: Mid-length position
• Country of Origin: Made in USA