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![SHS Airsoft M150 SYSTEMA PTW/DTW/CTW AEG Spring SHS Airsoft M150 SYSTEMA PTW/DTW/CTW AEG Spring](https://cdn11.bigcommerce.com/s-yck5k/images/stencil/500x230/products/7189/71929/shs-airsoft-m150-systema-ptwdtwctw-aeg-spring__25596.1613296322.jpg?c=2)
High quality AEG upgrade spring made by SHS. Approximate FPS: 490