Stalker STK-5M

Overview
STK-5M - An upgrade originating from the Free Worlds League, the 5M variant of the Stalker uses moderate amounts of Star League technology. The seventeen double heat sinks of the 5M afford it far greater heat efficiency than the twenty single heat sinks of previous models. The Large Lasers were removed, replaced with a single Diverse Optics Sunbeam ER Large Laser placed in the 'Mech's centerline and a Narc Missile Beacon. The beacon allows the Stalker to tag enemy units with homing beacons, allowing friendly 'Mechs to easily send missile salvos its way. Finally, the 'Mech bears an additional ton of armor for added survivability.

Strengths
The only Stalker variant with a Laser Hardpoint in the Center Torso which allows it to deal damage if both Side Torsos were destroyed. Basically, a cheaper alternative (especially if you do not intend to run your Stalker with a XL engine) to the 5S without the additional AMS.

Weaknesses
It also has to be noted that the second Missile bay in the Left Torso (unlike the bay that comes equipped with a SRM 6 in stock configuration) only has one missile tube, which makes the missile hard point ineffective at mounting anything larger than a NARC or perhaps a SSRM 2 launcher (if you do not mind the staggered fire) because missiles will be fired one at a time.

Only one module slot.