Does this gun carry 10 in the magazine? Or did he reload
A Glock 43x/48/26 have standard 10 rd 9mm mags. G19 has 15 rd. G17 has 17 rd. The smaller G43 is 6 rd. Absent the model info, it is likely one of the 10 rd standard models.
“Does this gun carry 10 in the magazine? Or did he reload”
I don’t know. I have not seen any reports on what he was carrying.