Install this Midwest Industries AK Railed Gas Tube - AK to enhance the function and utility of your firearm. Midwest Industries constructed these Rifle Gas Blocks from 6061 aluminum and 4140 steel for a rugged platform that you can trust. The Midwest Industries MI-AKRGT Railed Gas Tube features a Mil-Spec top rail to mount optics and other accessories. Improve your weapon with the help of this Midwest Industries AK Railed Gas Tube.