It was manufactured by Loratus and was a mobile parabolic projectile platform that was made for taking out enemy units at far range with the help of a spotter. These units were also capable of laying mines to blow up unwary Imperial units.
They had an advantage over many other types of heavy artillery, such as being able to fire their ordnance with reasonable accuracy while on the move—useful during raiding operations and in avoiding counter-battery fire.
The MPTL-L was the precursor to the MPTL-2a vehicle, a medium artillery variant. Both, however, saw contemporary use throughout the Galactic Civil War.
The MPTL-L was capable of being upgraded to a heavier version.