That would be with a Kel Tec semi-auto. However, per the article, the handgun was "a Kel Tel 9 mm." Such a rare breed may be a lever action, for all I know :-)
In this case, however, the shooter had to make his weapon safe after the incident. This calls for unloading. This results in one extra round that is ejected. Where are you likely to put it if the round and the magazine are both on the ground in front of you?
” Google” kel Tec PF9- nice “carry” weapon