During maintenance, repair, or internal tuning of Airsoft Electric Rifles (AEG), replacing small internal secondary springs is essential for maintaining proper mechanical interaction across the trigger and feeding components. The SHS Version 2 Gearbox Spring Set (item code TH0037) provides a complete replacement kit engineered to restore factory-fresh tension to all moving internal parts inside a V2 shell.

Constructed from high-tensile steel with shape memory, this set includes all small service springs subject to continuous stress during firing cycles: the tappet plate spring, trigger spring, anti-reversal latch spring, cut-off lever spring, and switch assembly/selector springs. Using durable, precision-calibrated replacement springs from SHS prevents feeding misfires, trigger hang-ups, and selector issues on both stock and high-speed custom builds.

Technical specifications:

Brand: SHS (Super High Speed)

Type: Internal replacement spring set for gearboxes

Compatibility: Version 2 Gearboxes (V2 for M4, M16, MP5, G3, and related platforms)

Material: High-tensile spring steel with shape memory

Springs included: Tappet plate spring, trigger spring, anti-reversal latch spring, cut-off lever spring, switch/selector springs

Recommended Application: AEG repairs, routine maintenance, and custom upgrades

Item Code / SKU: TH0037 (Ref. 659)

Package contents:

1x Complete SHS V2 Gearbox Service Spring Set (TH0037)

Detailed usage instructions:

Open the Version 2 gearbox shell, ensuring the main power spring is fully decompressed.

Carefully remove old or worn springs using needle-nose pliers.

Clean the mounting pins and shell tracks of old grease or metal debris.

Install the new SHS springs into their designated positions (tappet plate, trigger, anti-reversal latch, and cut-off lever).

Reassemble the gearbox shell and test the manual tension of each mechanical component before powering the unit.

Safety warnings and legal compliance: Mechanical spare parts intended for airsoft AEGs. Fully complies with European General Product Safety Regulations (GPSR). Keep out of the reach of children. Always wear protective eyewear during installation to prevent small springs under tension from causing eye injuries.

Selecting the SHS V2 Gearbox Spring Set TH0037 restores crisp mechanical reset and long-lasting reliability to your airsoft rifle.