The Modify Gearbox Spring Set for V2 M4/V3 AK AEGs provides essential internal replacement springs, offers enhanced durability, and can improve performance by providing consistent and correctly tensioned springs for the trigger switch, anti-reverse latch, and tappet plate. This comprehensive kit is a good way to replace worn or damaged components for more reliable and consistent operation in airsoft guns with standard V2 or V3 gearboxes. Benefits of the Modify Gearbox Spring Set • Comprehensive internal replacement: The set includes all necessary springs (anti-reverse latch, safety catch, cut-off lever, trigger switch, and tappet spring) for both V2 and V3 gearboxes, making it an excellent replacement for missing or damaged parts. • Enhanced durability and consistency: The springs are precision-engineered for enhanced durability, providing more reliable and consistent performance compared to a gun with worn-out springs. • Improved trigger and feeding: By replacing the tappet and trigger springs, you can help prevent issues like mid-cap syndrome (inconsistent BB feeding) and improve the trigger pull and responsiveness. • Component integrity: The set includes all the small, easily lost parts that are crucial for the gearbox to function correctly. • Performance enhancement: While not a "high-speed" upgrade, a new, correctly tensioned spring set is a fundamental step in ensuring the gearbox operates as it should, which is the basis for all other performance upgrades. Spring set includes: Anti-reverse Latch Spring Safety Catch Spring Cut-Off Lever Spring Ver. 2 Cut-Off Lever Spring Ver. 3 Trigger Switch Spring Tappet Spring 3 Mounting Screws.