Upgraded Railgun Turrets expands the massive railgun turret into four devastating MK tiers, each with distinct green/blue/red/purple coloring and custom icons.

Key features:
- MK1–MK4 progression: health 5000 → 8000, range +4 per tier (44/48/52/56), damage modifier 2/4/6/10, cooldown 120/100/80/60 ticks.
- Improved energy storage, input flow limit, and reduced energy per shot for sustained high‑power firing.
- All recipes require a cryogenic plant and use advanced Space Age ingredients:
- MK1: Railgun turret + 200 lubricant + 200 electrolyte
- MK2: MK1 + 200 electrolyte + 200 ammonia + 200 supercapacitors
- MK3: MK2 + 300 fluorine + 100 uranium‑235
- MK4: MK3 + 200 promethium asteroid chunks + 20 fusion power cells + 1000 fluoroketone (cold)
- Technology packs per tier:
- MK1–MK3: Automation, Logistic, Military, Chemical, Utility, Space, Metallurgic, Electromagnetic, Agricultural, Cryogenic
- MK4: all of the above + Promethium
- Dynamic technology patch automatically applies railgun turret‑attack bonuses from vanilla research to all upgraded tiers.
- Recursive mask tinting ensures consistent custom coloring on all turret animations (including the complex railgun effect layers).
- Custom item, entity, and technology icons for a polished look.
- Full English and Chinese locale support.
- Requires the Space Age DLC.