Amazing 2 shot extension - Wilson Combat Extension Tube for 12 Gauge Remington M870/1100/11-87

I bout this for my Remington 870. I had to do gunsmithing on the 2 dimples in the magazine tube so the follower would fit and run correctly. The follower thow i was not impressed with as when the magazine was empty it was hard to get the frist round in. For some reason it would get stuck, i ordered a steel follower and it corrected the problem.