The OPSol was perfect. Easy to put in and take out. Allowed me to use the 1 3/4 shell with no issues. I would highly recommend this to anyone. If you think why should you get this, well I went to the range this weekend to try mine out. I went through 20 regular shells first, and my arm started to get sore. Switched to the OPSol and the minishells and there was such a difference! A guy at the local gun show said those minis have the same recoil. NO, NO they DO not! not even close! :) If you want to practice with more that a couple shells and not get a sore arm for the rest of the weekend get one. If you want to keep more than 4-5 shells loaded in your Mossberg get one. Texas made Veteran owned what more reasons do you need :) Thank you for your service! And thank you for making the OPSol fantastic product!