What part of "He had a loaded gun," don't you understand?
Everyday citizens don't forcibly enter federal property during a riot, while in possession of a loaded gun, unless they are planning to use the gun.
Read the first link, which I provided. It is to the Department of Justice website, and it doesn't include commentary or spin.
It clearly explains that ....
Mark Mazza, 57, from Shelbyville, Indiana, pleaded guilty on June 17, 2022, to assaulting law enforcement officers and to carrying a loaded gun onto the grounds of the United States Capitol on January 6, 2021. These offenses occurred while a riot was in progress.
Despite not being licensed, Mazza carried a Taurus revolver loaded with 3 shotgun shells and 2 hollow point bullets into the Ellipse of the United States Capitol building during the breach on January 6, 2021. That is not liberal spin. It is what 57- year-old Mark Mazza of Shelbyville, Indiana, has pleaded guilty to.