It sounds like he didn’t know what the Vegas shooter was up to. Apparently sold him armor piercing and tracer rounds.
http://nbc4i.com/2018/02/02/man-who...ith-manufacturing-armor-piercing-bullets/amp/
http://nbc4i.com/2018/02/02/man-who...ith-manufacturing-armor-piercing-bullets/amp/
Man who sold ammo to Vegas shooter is charged with manufacturing armor-piercing bullets
By Associated PressPublished: February 2, 2018, 5:58 pm
Unfired armor-piercing bullets found inside the Las Vegas hotel room where the attack was launched on Oct. 1 contained the fingerprints of ammunition dealer Douglas Haig of Arizona, according to the complaint filed in federal court in Phoenix. It says Haig didn’t have a license to manufacture armor-piercing ammunition.