• 6061 aluminium construction for long-lasting performance.
• The aluminium alloy surface is anodised with a bronze finish to enhance corrosion resistance, increase hardness, and improve wear resistance.
• Precision stepless Hop adjustment (0~2mm) for exceptional accuracy.
• The front double O-ring seal ensures consistent performance.
• Includes 4-Way Adaptive Hop-Up Nub with two hardness options (70°and 80°).
• The 4-Way Adaptive Hop-Up Nub can be used in four directions. It combines flexibility, precision, and customisation in one innovative design. Whether you’re shooting for accuracy, range, or adapting to diverse conditions, this nub ensures your rifle performs at its best. Choose your hardness, tweak your setup, and experience next-level precision.
• Easy installation with minimal modification required.
• For Tokyo Marui M4 MWS Airsoft Gas Blowback Rifles.

You can refer to this video to install the CNC Hop-Up Chamber Set for MWS M4 GBBR.