G&P Baby Monster . Raptor Silecer If your hop up adjustment

If your hop up adjustment is not having a significant effect on the hop up of your BB

- Velcro Strap adjust different waist size

- Quick-Change Spring System

- Suitable for VFC / Umarex HK416 AEG / GBB Series

G&P Baby Monster . Raptor Silecer If your hop up adjustmentG&P M63A1 Tactical Rail Version 1 1 Scale Electric Powered Airsoft AEG Full metal Constructed from G&P Industry Super Solid Built with weight over 4. 5kg Except Pistol Grip & Stock this AEG is entirely metal Full Metal Receiver (Die Cast), Aluminum Outer barrel (one piece constructed), Rail System Handguard, Steel Flashider, Flip up Rear Sight (Die Cast) Nylon Fiber Grip, fixed stock (PA+GF) Equipped with 8mm Gearbox (Modified Version 2 Type) with