AR-15 Barrels, Fluted, Stainless Steel, Rifle-Length - AR-15 Barrel, 18'''', Fluted, Rifle-Length, Stainless Steel
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Criterion Barrels
Overview
The Criterion Barrels 18-inch fluted AR-15 barrel is designed for the 5.56 NATO caliber, featuring a rifle-length gas system that enhances reliability and recoil management. The fluted profile not only reduces weight but also aids in heat dissipation, making it suitable for longer shooting sessions. This barrel is commonly found in precision-oriented builds where accuracy and effective cooling are key considerations.
Specifications
AR-15 Barrels, Fluted, Stainless Steel, Rifle-Length - AR-15 Barrel, 18'''', Fluted, Rifle-Length, Stainless Steel
Build history on GunPartPicker
Builders have been adding the Criterion Barrels AR-15 Barrels, Fluted, Stainless Steel, Rifle-Length - AR-15 Barrel, 18'''', Fluted, Rifle-Length, Stainless Steel to their builds on GunPartPicker since April 2026. All time, it ranks #242 of the 821 barrels builders have added.
It was out of stock everywhere we track for all of September 2026, and today none of the 2 retailers we track has it in stock right now. Listed prices start at $370.49 at Brownells for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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