Features:

• Slightly narrow entrance for better sealing to achieve more consistent power output
• Special pressure point geometry greatly improves hop up performance and dramatically increases accuracy
• Suitable for Marui / WE / KJ GBB Pistols, WE GBBRs and VSR-10 compatible Air Cocking Rifles
• Compatibility: For Tokyo Marui GBB and VSR10, WE GBB, and KJW GBB Hopup Units
• Material: High Durability Rubber