Tier 4 Part

Picture	Part	Drop from	Armor upgrade	Weapon upgrade
	Optic Scope	Infinity mines Level 1	N/A	Scoped
	Polymers	Infinity mines Level 2	Shock Protection	N/A
	Goretex	Infinity mines Level 3	Firegecko's Enhancement	N/A
	Carbon Polymer	Infinity mines Level 4	Regeneration	N/A
	Recoil Absorber	Infinity mines Level 5	Laser Reflector	N/A
	Cylindrical Rotary Lock	Infinity mines Level 6	N/A	Bonus Ranged Damage
	Electric Motor	Vault 12	N/A	Bonus Max Damage
	Delinker Mechanism	The Tunnel	N/A	Bonus Attack Speed
	High Tech Gunpowder	Abbey	N/A	N/A
	Auto-Trigger	Area 51‎	N/A	Killing Spree
	Engine	Warehouse‎‎	Mirror System	N/A
	Semi Trigger	Tanker Basement‎‎	N/A	Fast Trigger
	Gun Control Module	The Temple	N/A	Destroyer
	Microchips	Laboratory X7‎	Heavy Stonewall	N/A
	Mine Parts	Cathedral‎	N/A	N/A
	Capacitors	Mariposa Military Base‎‎	Utility	Smasher!
	Ceramic Plate	Talchem California HQ‎‎	Fill the gaps	N/A
	Kevlar	Glow	Heavy	N/A
	Plasma Accelerator	Vault 15‎	Defensive Belt	Slayer
	Wires	Waterworks‎‎	N/A	Penetrate
	Plasma Transformer	Slavery Vault‎	Bonus Move ; Speed Mechanism	N/A
	Electrical Transformer	Hawthorne Military Base	N/A	More Critical
	Steel Plate	Paradise Valley‎	Gain Luck	Spiked
	Leather Hide	Ares Rocket Silo	Cured ; Survivalist	N/A
	TX-28 Microfusion Pack	Ares Rocket Silo	Special force bonus	N/A
	Advanced Polymers	Vault 13	Gain Strength ; Gain Endurance	N/A
	HiFlo Hydraulic Systems	Vault 13	Tesla Addition	Poisoned
	Unique Plasma Parts	Vault 14	N/A	Better Critical
	Polycarbonate	Vault 41	Gain Intelligence ; Gain Agility	N/A
	Electromagnetic Mechanism	Vault 41	N/A	Long range
	Glass Polymers	Sierra Army Depot	Gain Perception ; Gain Charisma	N/A
	Electric Amplifier	Sierra Army Depot	Sneaky	N/A
	Enchanced Servomotors	Navarro	Anti-thermal System	N/A
	Rotary Chamber	Navarro	Iron Skin	Chip Shot
	Advanced Shell	Event Encounter	Defence Enhancement	N/A
	Carbon Polymer Barrels	Lost Signal tier I	Penetration Protection	Bonus Min Damage
	T-51b Shell	Lost Signal tier II	Advanced Plate	N/A