You are correct!
The Barrel information I posted was incorrect. I had a brain Fart! My mind set was on thinking of the Remington 870 Special Purpose barrels and not the standard barrels. All of the Standard Barrels of the same gage will fit on the express and you were right on regarding the tube. Thanks!
The Constitution is not an instrument for the Government to restrain the people. It is an instrument for the people to restrain the Government!
Today, we need a nation of Minutemen, citizens who are not only prepared to take arms, but citizens who regard the preservation of freedom as the basic purpose of their daily life and who are willing to consciously work and sacrifice for that freedom."
-- John F. Kennedy