“The OPSol insert did allow me to use 1 3/4 minni shells in my mossberg 500. Shot 5 rounds as a test, no miss feeds. However, the insert did not stay in place. The elevator assembly kept pushing it down. I tried cutting an angled slot on each side of the OPSol to allow for clearance but to no avail. A small peace of gorilla tape should do the trick. Basic concept and design is excellent but needs improvement.”
