The first step was to completely pull apart the mech and build a new internal structure using endo-steel. Two LB-10X cannons would then be mounted, along with smaller support weapons; two medium lasers, a Streak-2, and an AMS system. This design ran into problems almost immediatly. The new, bulkier structure blocked the feed mechanism to one of the ammo bins, forcing the design to loose a full ton of autocannon munitions. Tests showed that against small targets, which was one of the focus objectives of the mech, it was difficult to target with the torso-mounted medium lasers, and the Streak SRM was, in the words of the test pilot "more of an insult than an injury".
The second redesign was much more radical. The lasers were dropped in favor of two arm-mounted machineguns. ComStar agents were able to obtain records showing that the engineers submitted protests in writing demanding they not be held accountable, but the refit went through as demanded. The Streak was also dropped in favor of the more common SRM4. This resulting design was a surprising success. The machineguns acted as a sort of continuous iron-sights targeting system for the LB-10X, making it highly effective against light mechs, and loading the smaller machinegun ammo into the fourth AC magazine solved the munition feed problem. While only marginally more damaging than a Streak, the SRM4 proved to be more effective when used to 'brawl' heavier mechs.
Finally, the design, being based around low-heat weapons, has an incredible heat-loss of 82% above nominal. Its two primary flaws are endemic to the base design - the X4 is slow, with a top speed of only 48kph, and it lacks containment systems for its munitions. However, the design also mounts the maximum amount of armor for its model, making penetration of the design a difficult endeavor.
Edited by SwordofLight, 09 December 2012 - 03:48 PM.