Suitable for all GBB

It appears on the KM4 2GX mechbox diagram as part 51

and more compact stock

Hook & Loop ID strip

Overall dimensions: 4"H x 5"W

Maple Leaf Autobot Hop-Up Bucking for WE-Tech/Tokyo Marui Gas Guns (70 Degree) Retro Arms Suitable for all GBBMade with rubber to tightly seal in position for increased velocity over a standard bucking Narrow entrance for improved sealing resulting in more consistent power output Hop up performance and accuracy increased through pressure point geometry C Clip to enhance lip stiffness for further sealing Compatible with Marui WE KJ GBB Pistols, WE GBBRs and VSR 10 sniper rifles Compatible with old style WE Tech gas blowback pistol or rifles 70 degree hardness