Energy Weapons - Small Laser
The Small Laser is a free-electron laser which focuses a beam of light on targets to cause damage. The compact size of the Small Laser allows it to be equipped and used efficiently on practically anything; however the reduced firepower means that Small Lasers are not usually used on heavier combat devices such as 'Mechs or tanks. Small lasers can also be mounted on battle armor or used as an infantry support weapon by conventional infantry, where it is referred to as a "Support Laser."
Description provided by Sarna.Net
In MW:PR 3051 the small laser is a light weight and efficient weapon. However, it is best suited for personal defense roles where applicable, as it simply does not possess the firepower necessary for stopping heavier combat vehicles and mechs. It is also well suited for light mechs and scout vehicles where firepower is not nearly as important as speed and agility.