Guntec AR-15 Gas Tube Features The Guntec USA AR-15 Gas Tube is sized specifically to the rifle length gas system measuring 15.25 inches to route gas from the port back to the bolt carrier group at the correct timing for reliable cycling. Rifle length systems are favored on longer barreled builds because the extended dwell time produces softer recoil impulse and more consistent extraction than shorter gas systems. Using a tube cut to the correct rifle length specification avoids the short-stroking or over-gassing issues that come from mismatched components. This makes it a straightforward purpose-built replacement or build component for anyone assembling or servicing a rifle length AR-15 upper. Constructed from 304 stainless steel this gas tube resists the corrosion and carbon buildup that can accumulate inside a gas system after repeated firing. Stainless steel also holds up well to the high temperatures generated as gas is diverted from the barrel reducing the risk of warping that can occur with lower grade materials over extended use. The tube s compact dimensions keep it lightweight and easy to install during a build or routine upper maintenance. For builders and shooters who want a durable correctly specified gas tube without guesswork this component is available for sale at GrabAGun. Guntec AR-15 Gas Tube Specifications Manufacturer: GunTec Model: AR-15 Gas Tube Material: Stainless Steel Gas System Length: Rifle Length Overall Length: 15.25 Available At: GrabAGun