Lancer Tactical M140 High Quality Piano Wire Steel Spring

Brand: Lancer Tactical Material: Spring Steel Compatibility: Compatible with AEG Airsoft Guns with Metal Gearboxes Package Includes: 1X M140 Piano Wire Steel Spring Features Durable steel piano wire construction For Use With AEG Airsoft Guns w/ Metal Gearboxes Mathematically Calculated Design for Best Consistency Variable pitch spring design for supreme quality and performance Muzzle velocity output of ~450 - 550 FPS w/ 0.20g BBs (depends on several factors)