[CapnTrips]

>On or about January 6, 2021, within the District of Columbia, CHRISTOPHER ALBERTS, did carry and have readily accessible, a firearm, that is, a Taurus G2C semi-automatic handgun, on the United States Capitol Grounds and in any of the Capitol Buildings.

In the same sentence you quoted

[TeeMassive]

Again, nothing mentions the Capitol Building itself (Capitol Grounds and Buildings cover a lot of spaces) and it's not like it is unusual for weapons to be seized https://www.nbcwashington.com/news/local/us-capitol-police-s...

[aigen001]

"COUNT ONE On or about January 6, 2021, within the District of Columbia, CHRISTOPHER ALBERTS, did carry and have readily accessible, a firearm, that is, a Taurus G2C semi-automatic handgun, on the United States Capitol Grounds and in any of the Capitol Buildings.

COUNT TWO On or about January 6, 2021, within the District of Columbia, CHRISTOPHER ALBERTS, did unlawfully and knowingly enter and remain in the United States Capitol and grounds, a restricted building and grounds, without lawful authority to do so."

[TeeMassive]

You are aware that "capitol grounds" is not just the capitol building itself right?