He tailgated me until I slowed to 10 mph on a 35 mph on old hwy 280 Narrows, then he pulled a black gun, like a glock, and pointed it to me when in front of me while slowing, blocking. He then almost ran off road at high speed increase. Then I got his plate by Therapy South and he made a U-turn & chased me to hwy 43 off 280 with a gun. Police on phone said I have to take him to court, they will not report him. Black hair, caucasian.