CMC Triggers 81621 AR-15/AR-10 Gas Tube Pistol Length 6.705" 304 Stainless Steel - Black Nitride

The CMC Triggers 81621 gas tube is a precision-machined replacement and upgrade component for the AR-15 and AR-10 platforms. Cut from solid 304 stainless steel and finished in a durable black nitride coating, this tube is built to resist corrosion, wear, and fatigue under repeated firing cycles.

At 6.705" overall length, the 81621 is dimensioned for a pistol-length gas system, pairing with a compatible low-profile gas block to route expanding gases from the barrel back to the bolt carrier. The matte black nitride finish adds surface hardness and corrosion resistance while blending cleanly with most AR upper receivers and components.

CMC Triggers machines this tube from 304 stainless steel for strength and long service life, backed by the company's 100% lifetime warranty. Made in the USA, the 81621 is a quality direct-fit gas tube for pistol-length AR builds, replacement of worn factory tubes, or custom upper-receiver projects.