Gas Tubes

DSP gas tubes are ideal for your next build or a quality upgrade for an existing rifle. Select your gas tube based on your barrel’s gas port location. For instance, most 16″ AR-15 barrels have a carbine-length gas port, and will be sold as a “carbine” barrel. However, if your barrel is sold as a “mid-length” barrel, you will need a mid-length gas tube.

System Barrel Length Port Distance
Pistol Less than 10 inches 4 inches
Carbine 10-18 inches 7 inches
Mid 14-20 inches 9 inches
Rifle 20 plus inches 12 inches