A gun that accelerates a bullet to a speed of 13,000 miles per hour in 0.2 seconds? Seems like a science fiction dream, but don't even blink -- with advances in rail gun technology, a new era of high-speed military weaponry is coming right at us, faster than a speeding bullet.
"How about rail guns?"
Rail guns could be another possibility, depending on the size, effectiveness, and power consumption of the rail gun compared to a laser.