Improved 2-Ring Hopup Bucking

Great air seal hop up bucking for your AEG , This is an easy-installation hop up bucking. Your first step to D.I.Y!Two ribs prevent sliding and maximize the seal.

Specifications:

• Suitable for all models AEG
• Hardness: 55-60 degrees
• Maximize the air seal
• 2 ribs prevent sliding