Good fit, strong, nice finish, worked perfectly except for the roll pin - Aero Precision Melonite Gas Tube

This worked great. It was part of a first time build. I knocked it a few times and it had no marks, bends, or dings. Here's the issue that I had. It came with a roll pin, which is good; however, so did the JP Enterprises .750 Adjustable Gas Block. So, firstly I was confused why I had two of the same sized roll pins. First I used the one that came with the tube. I'm 100% certain that a skilled armorer would have had no issues putting it in, but I had some real issues getting it through and ended up damaging it. Luckily I had the gas block backup and it went in perfectly first time.