I received the correct barrel from Green Barrel Company as a replacement barrel for my Thompson Center Hawkins. I did not purchase the Green Mountain Barrel directly from Green Mountain Barrel Company but rather MidUSA. The box was incorrectly labeled as a 15/16-inch barrel. The barrel was a 1-inch barrel and would not fit the stock. Called Green Mountain and no questions ask said they would ship a replacement barrel before I even sent them the other barrel back to them. Great customer service. I did have to make some minor alterations to make the barrel compatible with my Hawkins stock. The spring clip that puts pressure on the ramrod to keep it from rattling was too long and kept the barrel from seating all the way into the stock. I bent the spring clip and ground the end to make it a little shorter. It works great and holds the ramrod snuggly in place. I took the brass thimbles off the old Thompson Center barrel to put them on the new Green Mountain barrel and found the old hex nuts on the Thompson Center barrel were not long enough so I ended up using the longer Screws that came on the Green Mountain barrel. The thimbles that come on the Green Mountain barrel are black steel so I use my old brass thimbles from my Thompson Center rifle so all the gun’s hardware would match. The only other problem that I had was that the head on the screw that was provided with the Green Mountain barrel to hold the spring ramrod clip that I mentioned above was too high and blocked the passage of the ramrod. I use one of the flatter hex nuts and it work fine for holding the spring clip in place and the ramrod passes over the screw easily. Minor problems and certainly recommend purchasing the Green Mountain replacement barrel. It looks great and shoots great. I like the faster 1:28 inch twist. The Thompson Center rifle had a 1:48 inch twist.