0.5 Joule Downgrade Spring for Airsoft Replicas (Germany Legal)

This 0.5 Joule airsoft spring is designed to downgrade AEG airsoft replicas to comply with the strict German airsoft regulations, where replicas intended for automatic fire must remain under 0.5 Joule. It is the ideal solution for players, retailers, and technicians preparing replicas for the German market.

Please note that final output energy may vary depending on the replica, gearbox efficiency, air seal quality, barrel length, and hop-up setup. In some cases, it may be necessary to slightly shorten (cut) the spring to achieve the desired energy level.

Key Features

• Target output: ~0.5 Joule (replica dependent)
• Designed for Germany-compliant airsoft replicas
• Compatible with most AEG gearboxes (V2, V3, etc.)
• High-quality spring steel for consistent compression
• Ideal for CQB, indoor fields, and training replicas
• Recommended for professional installation and chronograph testing

Real-World Use

This downgrade spring is commonly used in CQB arenas, indoor airsoft fields, and for Germany-spec replicas that require strict power limits. It allows players to enjoy safe, legal automatic fire while maintaining smooth gearbox cycling and reduced mechanical stress.

Important Notes

• Energy output depends on replica configuration
• Chronograph testing is mandatory after installation
• Cutting the spring should only be done by experienced technicians
• Not suitable for gas or HPA replicas

Looking for a replica or internal parts to pair with this spring? Explore our airsoft rifles and batteries & chargers collections to complete your setup.

Specifications

Type	AEG Downgrade Spring
Target Energy	~0.5 Joule
Compatibility	Most AEG gearboxes (V2 / V3)
Material	Tempered Spring Steel
Use Case	Germany-compliant airsoft replicas