Lancer Tactical M140 High Quality Piano Wire Steel Spring [~450-550 FPS]

Brand: Lancer TacticalMaterial: Spring SteelCompatibility: Compatible with AEG Airsoft Guns with Metal GearboxesPackage Includes: 1X M140 Piano Wire Steel SpringFeaturesDurable steel piano wire constructionFor Use With AEG Airsoft Guns w/ Metal GearboxesMathematically Calculated Design for Best ConsistencyVariable pitch spring design for supreme quality and performanceMuzzle velocity output of ~450 - 550 FPS w/ 0.20g BBs (depends on several factors)