Description
Upgrade your AR-15 build with the Aero Precision 5.56 Pinned and Welded 14.5 CMV Barrel w/ Gamma 556SL, engineered for precision, reliability, and compliance. This mil-spec barrel delivers exceptional accuracy and durability, perfect for tactical enthusiasts seeking a compact yet legal 16-inch overall length setup without the hassle of SBR registration.
Key Features
Premium Construction: Crafted from 4150 Chrome Moly Vanadium (CMV) steel with a QPQ Nitride finish for superior corrosion resistance and longevity in demanding conditions.
Pinned and Welded Design: The 14.5-inch barrel is permanently affixed with the VG6 Gamma 556SL hybrid muzzle device, ensuring ATF-compliant 16-inch length while maintaining a maneuverable profile.
Advanced Muzzle Control: The Gamma 556SL features an aggressive 3-chamber design that significantly reduces recoil and muzzle rise, enhancing follow-up shot speed and control.
Optimized for Performance: Mid-length gas system paired with a 1:7 twist rate stabilizes heavier bullets, ideal for 5.56 NATO ammunition in home defense or range applications.
HP and MPI Tested: High-pressure proofed and magnetic particle inspected for flawless reliability and safety.
Specifications
Barrel Length: 14.5 inches (16 inches overall with pinned device)
Caliber: 5.56 NATO
Gas System: Mid-Length
Twist Rate: 1:7
Profile: Government
Gas Block Journal: 0.750 inches
Muzzle Thread: 1/2×28
Finish: Nitride / Melonite
Platform: AR-15
Weight: 26.4 oz
Why Choose This Product
This barrel addresses common AR-15 builder challenges by combining compactness with legal compliance, eliminating the need for special permits. Its mid-length gas system offers smoother operation and reduced wear compared to carbine-length alternatives, while the Gamma 556SL minimizes flash and recoil for better low-light performance and shooter comfort. Whether youre customizing a duty rifle or personal defense weapon, this setup provides sub-MOA potential with quality ammo, backed by Aero Precisions reputation for value-driven excellence.
Frequently Asked Questions
Q: Is this barrel legal without an SBR stamp?
A: Yes, the pinned and welded Gamma 556SL extends the overall length to 16 inches, complying with federal regulations for non-NFA firearms.
Q: What type of steel is used in this barrel?
A: Its made from 4150 CMV steel, known for its strength and heat resistance, ensuring consistent performance under high-volume fire.
Q: Does it include a gas block or tube?
A: No, this is a barrel-only assembly. It requires a separate low-profile gas block and mid-length gas tube for installation.
Ready to enhance your AR-15s accuracy and control? Secure your Aero Precision 5.56 Pinned and Welded Barrel today and experience the difference in your next build.


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