Abstract: Provided is a downward ejecting bullpup firearm with a detachable magazine having a downward facing ejection port rearward of a magazine well. A top inspection window is positioned substantially in vertical alignment with the magazine well. A charging handle body has a rear portion and a forward portion and is movable between forward and rearward positions. The rearward portion blocks the inspection window when the charging handle body is in the forward position and the forward portion has a through-opening that substantially aligns with the inspection window when the charging handle body is in the rearward position.