Well... You could get something like ED-209 with this:
Base frame: Hyundai Shin-Hyung (10 Slots)
Walker mode (-2 slots)
Armor 20 (-1 slot)
Reinforced, fixed, remote mount (-3 slots)
Rigger Adaptation (-1 slot)
Normal, flexible, remote mount (-2 slots)
Fuzzy Logic (-1 slot)
Handling: +3
Accel: 10/22
Speed: 80
Pilot: 1
Body: 10
Armor: 20
Sensor: 1
All availabilities at this point are 12 or less. Cost is 37,500. Add in a few weapons, some software upgrades, sensors, and you are ready to go after Robocop. I'm thinking a GE Vanquisher Autocannon in the reinforced mount and maybe something like a LAW, or grenade launcher in the standard mount. The autocannon would take a rest. item quality (avail 20F), so ostensibly you could get this entire setup at character generation for between 60 and 70k depending on how much you invested in weapons, sensors, and program upgrades.