Derek, it sure will. It has a 3 inch chamber so it will safely fire both 3 inch and 2-3/4 inch shells. All shotguns with a 3 inch chamber can fire both. With semi automatic shotguns like the Mossberg 930 id recommend higher velocity loads when using 2-3/4 inch shells until it's thoroughly broken in though. Lower velocity loads may not completely cycle the bolt all the way back causing it to jam until all the kinks are worked out. After the initial break in period it Should fire anything you put threw it. Hope this helps

Absolutely, 100%, A Huge Yes on that!!!

Hi Derek, yes Sir. Same concept as a .357 Magnum being able to chamber/fire the shorter .38 Special. Cheers and stay safe!

Derek, yes sir, a shotgun chambered in 3" will also accept 2 3/4" shells. Have a great day!