Madbull 1inch outer barrel extension with inner barrel stabilizer Magazine-Type_Gas Rifles Adjustable HOP UP System Notes:

Adjustable HOP UP System Notes: CO2 Cartridge is NOT included

The Umarex H&K Full Metal 417 (VFC) is high quality to Umarex’s AEGs

All Cartridge were produced by Computer Numeric Control (CNC) Lathe

Length: 245 mm

Madbull 1inch outer barrel extension with inner barrel stabilizer Magazine-Type_Gas Rifles Adjustable HOP UP System Notes:Madbull 1Inch Outer Barrel Extension with Inner Barrel Stabilizer INCH BARREL EXTENSION KEY FEATURES: CNC Lightweight Alumninum with Level II Black Anodize (seamlessly integrates with Madbull black outer Barrels) CCW threaded on both ends Hides extra inner barrel slack Adds space for quick detach or other barrel accessories Solves common issues: 1) inner barrel longer than outer barrel. 2) RIS longer than outer barrel Recommended for use with Madbull