Brand: AXC Tactical
Built to Military Specifications
Dependable Quality and Performance
There are 4 different lengths of gas tubes available for your AR. The 4 main lengths are Pistol, Carbine, Mid, and Rifle. If you are not sure the length of your gas system, measure the port in your barrel back to the receiver.
The pistol length tube is used mainly on 10 inch or less barrels, an AR pistol. The length of this gas system is approximately 4.5 inches.
The carbine length tube is used mainly on 10-18 inch barrels, and is probably the most commonly used length. The tubes themselves are approximately 7.5 inches long.
The mid length tube is used mainly on 14-20 inch barrels. The tubes are approximately 9.5 inches long.
The rifle length tube is used mainly on 20 inch or longer barrels. The tubes are approximately 13 inches long.