GUARDER PSG / AEG SR-25 Progressive Tune-Up Spring – SP150

Guarder Progressive Spring for AEG Tokyo Marui PSG and SR25 with a stiffness of SP150 (PSG150).

Offers a performance of 152 – 161 m/s.

Made from tempered Si-Cr wire.

Progressive (irregular) winding of the spring eases compression in the initial phase.

Performance consistency even after thousands of shots.

Fits only extended gearboxes of type IV (PSG) and V2.5 (SR-25, CA SCAR-H, E&C 417, etc.)

Technical Specifications

• Compatibility: AEG rifles TM PSG and guns with V2.5 gearbox (SR-25, CA SCAR-H, E&C 417, etc.)
• Material: Tempered Si-Cr wire