Bodycam footage from the fatal New Year’s Eve shooting death of a Douglas County sheriff’s deputy shows chilling footage of officers storming an apartment building under heavy gunfire in an attempt to rescue Deputy Zackari Parrish. The gunman used an M16 rifle, an M4 rifle, a shotgun and a Glock pistol during the shootout. The gunman, Matthew Riehl, legally owned 15 weapons purchased between 2011 and 2016, and 11 of them were in working order at the time of the shooting. M16 and M4 guns are military-grade rifles. Civilian versions of the weapons are sold in the United States, but Lekander, a department spokesman did not know whether Riehl, a former Wyoming National Guard soldier, had the military type or civilian versions of the weapons. In media interviews Sheriff Spurlock used the military nomenclature to describe the weapons.