He’s referencing Gaige Grosskreutz who had a Glock. Anthony Huber was the one who attempted to use a skateboard as a bludgeon. Joseph Rosenbaum attempted to take Rittenhouse’s rifle after he had tried to distance himself.

https://youtu.be/GrVKqTCdM-A

Grosskreutz was hit in the arm and testified to aiming his pistol at Rittenhouse during the televised trial.