Lancer Tactical Airsoft Irregular-Pitch Upgrade Spring, M120 [360-450 FPS]

Specifications Brand: Lancer Tactical Material: Stainless Steel Muzzle Velocity: 360-450 FPS Color: Black Compatibility: All AEG Gearboxes Package Includes: 1X Spring Features Non-linear spring coils puts less stress on gearbox Constructed from high quality anodized stainless steel piano wire for increased tension and durability Universally compatible with all airsoft AEG gearboxes 190% Increased spring power (estimate based on average power output)