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CMMG
Overview
The CMMG 5.56mm Barrel Sub-Assembly features a 16.1-inch lightweight profile, designed for optimal maneuverability without sacrificing performance. With a 1:7 twist rate, this barrel effectively stabilizes a range of bullet weights, making it versatile for various ammunition types. The QPQ/Nitride coating enhances durability and corrosion resistance, ensuring reliable function in diverse conditions. This barrel is commonly found in lightweight AR-15 builds aimed at both tactical use and recreational shooting.
Specifications
Barrel Sub-Assembly 5.56mm - 16.1" Bbl Sub-Assy Lt 1-7 1/2-28" Black Nitride
Build history on GunPartPicker
Builders have been adding the CMMG Barrel Sub-Assembly 5.56mm - 16.1" Bbl Sub-Assy Lt 1-7 1/2-28" Black Nitride to their builds on GunPartPicker since March 2026. All time, it ranks #260 of the 844 barrels builders have added.
It was hard to find in September 2026, in stock on only 4 of the 21 days we checked, and today only Optics Planet has it in stock. It dipped to $119.40 at BattleHawk Armory for a stretch in September 2026, well under its usual $132.99, so sales do come around. Buying today, the lowest price is $169.99 at Optics Planet, above September's low of $119.40, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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