Here at Veriforce Tactical, we have some of the best reviewed AR-15 gas tubes online. Using only the most high quality stainless steel to corrosion resistance and long life use. All sizes of AR15 gas tubes including carbine, midlength, pistol, and rifle length gas tubes. We also pre-install our gas tubes on low profile gas blocks and railed gas blocks so you dont have to. We take pride in our gas tubes and helping our fellow AR15 enthusiasts get the best quality parts for the best price online!