JAmorin

Just purchased an M2 Field with a 21" barrel (My first shotgun). What is the out of the box capacity of the weapon? I can't find it in the manual. Not sure if there is a limiter installed at the factory that I need to remove or if one in the chamber and 2 in the mag tube is what it comes with. Sorry for the dumb question but I want to make sure I know all I can about this before I load and fire it. Thanks