For FWB 800X,
FWB 700 Evolution Top,
FWB 700 ALU Stock
Compression spring

1. Functionality: The compression spring is a critical component in the powerplant of spring-piston air rifles. It stores energy when compressed and releases it to propel the pellet forward when the trigger is pulled.

2. Material: Typically made from high-quality materials, such as steel or other alloys, the compression spring is engineered to withstand the repetitive compression and decompression cycles associated with firing an air rifle.

3. Compatibility: The compression spring is designed to be compatible with specific models of Feinwerkbau air rifles. It is crucial to ensure the correct fit and function within the rifle's spring-powered system.

4. Precision Engineering: Feinwerkbau is known for precision engineering, and the compression spring is expected to be crafted with meticulous attention to detail to meet high-quality standards.