The Gollum Medium Mech is named for its squat hunched over appearance, quickness, and subtlety. It weighs 50 tons. It lacks the ability to torso twist but this makes the torso rather compact.
The standard Gollum is armed with four small ER lasers, two medium ER lasers, one large ER laser, two machine guns, one UAC-5 cannon, and one Streak SRM-4 battery. Gollum pilots have to watch their heat levels carefully with all this weaponry, and many elect to replace the large ER laser with heat sinks.
Design Notes: I saw a model on BrickCommander one day and I was inspired to build the Gollum and the Stork. Both mechs are long-legged with fixed torsos and both pack lots of weapons, the idea being that you can save weight and bulk if you give up torso twist. Also I wanted to see what I could do with my brown parts.