Get a hold of Southern Kentucky Tactical on Facebook. He is drilling my carrier latch for me. Any magazine release will work for the Mossberg. If you want longer look into the TTI Benelli release or the Arredondo release. Drilling out the carrier latch on the 930 is the problem. They are made of spring steel which is really hard to drill. I broke 3 carbide bits trying to do it. SKyTac told me they had to heat treat them, drill and tap them, and then re heat treat them to bring it back to the original hardness. He also polishes the tip when he does it.
Just let him know which button you want to use and he will drill and tap whatever size you need for the button you choose.
