Stalker STK-5M

The STK-5M is an 85-ton juggernaut that fights at medium-to-long range, cruising at 32 km/h and topping out near 54. Where the STK-3F carries a Large Laser in each torso alongside its paired SRM 6 racks, this variant strips both Large Lasers and instead fields a single ER Large Laser in the center torso, adding a Narc in the left torso alongside its SRM 6; the right torso keeps only its SRM 6. The twin LRM 10 racks and paired medium lasers in each arm carry over from the STK-3F. Seventeen double heat sinks replace the STK-3F's twenty single sinks, and the design keeps its minimal, weapon-pod arms without hands and its combat computer. Irian BattleMechs Unlimited builds this configuration at Shiro III.