The CMC Nitride Gas Tube (brand part no. 81624) is a 13.65-inch intermediate-length gas tube machined from 304 stainless steel and finished with a nitride coating for the AR-15 and AR-10 platforms. Intermediate length sits between the two more common gas system lengths, running about 2 inches longer than a mid-length system and 1.5 inches shorter than a rifle-length system, giving a specific dwell-time tune that some competition and precision builders prefer. The nitride coating adds wear and corrosion resistance on top of what the 304 stainless base material already provides in the gas system’s high-heat environment.

Key Specifications

• Intermediate-Length Gas System Fit sits between mid-length and rifle-length.
• 13.65-Inch Tube Length is the confirmed overall length.
• 2 Inches Longer Than Mid-Length shifts the gas system’s dwell time.
• 1.5 Inches Shorter Than Rifle-Length gives a distinct tune from a full-length system.
• 304 Stainless Steel Construction resists corrosion and carbon buildup.
• Nitride Coating adds extra wear and corrosion resistance.
• AR-15/AR-10 Compatibility fits builds using an intermediate-length gas system.

Frequently Asked Questions

How long is this gas tube? 13.65 inches, intermediate length.

How does intermediate length compare to mid-length or rifle-length? It runs about 2 inches longer than mid-length and 1.5 inches shorter than rifle-length.

Buy the CMC Nitride Intermediate-Length Gas Tube

Get the right gas system tune with a CMC nitride-coated gas tube from our AR gas system selection. Order online and we will ship it straight to your door from our Lubbock, Texas gun shop.