Lahti was ordered to adapt the Maxim so that it could be fed with more modern metallic ammunition belts as opposed to the original cloth belts. The resulting weapon was able to fire at a rate of 850 rounds/min, whereas the Russian M1910 and earlier Finnish M09-21 were only capable of 600 rounds/min.
Lahti was tasked with improving the Maxim by making it use modern metallic ammunition belts instead of the old cloth ones. This change increased its firing rate from 600 rounds per minute to 850 rounds per minute, surpassing the Russian M1910 and earlier Finnish M09-21's capabilities of 600 rounds per minute.