Key Features: Heat-treated and precision-sized buffer spring. Improves rebound performance for prolonged use. Increases impact absorption and cushioning effect. Multiple counterweights allow free recoil adjustment. Enhances bolt catch position. Makes bolt return more consistent. Suitable for Tokyo Marui MWS GBB rifles. Dimensions (cm): 20 (L) x 10 (W) x 5 (H). Weight (grams): 150. Package includes: Buffer spring set x 1. Description: The T8 main buffer springs are heat-treated and precisely sized to reduce spring fatigue during prolonged use. The 70-degree recoil buffer rubber offers improved rebound and is resistant to breaking over extended use, increasing impact absorption and overall cushioning performance. Multiple counterweights allow for free recoil adjustment, enhance the bolt catch position, and ensure more consistent bolt return.