“I already had a Mossberg 590 with a raptor grip that I have used without any misfeeds using mini shells. I have never fired a standard shell in it because it is for self defense and I like more shells in the tube. I didn’t know it but the dealership installed the Opsol when I bought it. I just bought another Mossberg 590 and the dealership was out of the Opsol so mentioned I should buy one online. I didn’t even know Opsol was a thing even though I already had one. Well I got it and it is great in the Shockwave. I do have one complaint. The YouTube instructional video is not that good. In the video, the gun is black and the clip is black and the camera angle is dead straight on so you can’t really see which way the thing should be oriented when installing it. I wish the video could have been made better to make the installation more clear. The instruction card that comes with the clip isn’t any better. Show clear pictures. Fortunately since I already had one, I used it as a reference. But, until I did, the instructions and video were very frustrating. Anyway it is now installed and works a tick. Mossberg should put one in every box they sell as an option. It is comforting having that many shells in the tube with minis. Just redo the video.”
“Well, I haven't used the shell adapter yet but it fits perfectly in there and I can tell it will work. Plus all the videos showing that it works.
Everything else was just fine as well. So, 5 stars.”