This story is about 1800 words.
"Mark position 7-3. They're moving to the left."
He turned his mech to the position indicated by the last man. The gauge at the top of his view screen read 7-4. He fired.
The heavy gun and the remaining working one on the lower side fired at full velocity. 1000 rounds were spent in a second as the big tanks in the base of the mech feed round after round into the big guns and poured them out in a stream of fire that spread out three meters from the guns themselves.
He released the trigger.