it should unless you have a Mossberg then you need an adapter. The Mossberg 500 series—specifically the 500, 590, and the 590 Shockwave—is the GOAT with mini shells so long as you rock that OPSol Mini-Clip. In my experience, this combination works 100% of the time. If you aren’t familiar with the OPSol Mini-Clip, it’s a chunk of rubber that squeezes into the loading port and acts as a space filler