One piece standard capacity 7+1 replacement tube for the Benelli M4 series of shotguns. US made,This is simply the finest of the US made Extensions we have seen to date for the Benelli M4 series of shotguns. The Machining fit and finish on this tube is as close as we have seen to the Benelli Factory tubes. Compare the images on this tube to any other on the market and you will find there are none better.

 These are made of Chrome Molly tubing with a phosphate finish.