NC Shotgun Extension Complete Assemblies for 20ga.
These shotgun tubes are precisely machined from strong lightweight aircraft grade 6061 aluminum tubing. You can add anywhere from +4 to +7 rounds. Barrel nuts are designed to match OEM styling. Kit includes barrel nut, extension, spring, and end cap. We also recommend using our Teflon coated Low-Drag Follower for the best performance. 
! NOTE ! - Some shotgun magazine tubes may require minor modification. Call us if you are having problems fitting our extension tubes to your shotgun.
