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CMMG
Overview
The CMMG 22LR AR-15 Barrel with FSB is designed specifically for .22 LR caliber builds, featuring a 16.1-inch M4 profile that balances weight and performance. With a carbine-length gas system and a twist rate of 1:16, this barrel ensures reliable cycling and stability for a variety of ammunition types. The .750 gas block diameter allows for compatibility with standard gas blocks, making it a versatile choice for those looking to build a lightweight plinking or training rifle.
Specifications
Available Merchants(4)
Prices checked
Price Alert
Build history on GunPartPicker
Builders on GunPartPicker first added the CMMG 22LR AR-15 Barrel With FSB - M4 Profile - 16" to a build in May 2026.
It was hard to find in September 2026, in stock on only 10 of the 24 days we checked, and today 2 of the 4 retailers we track have it in stock. It dipped to $141.22 at BattleHawk Armory for a stretch in September 2026, well under its usual $190.77, so sales do come around. Buying today, the lowest price is $174.49 at Optics Planet, above September's low of $141.22, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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