Madbull 1inch outer barrel extension with inner barrel stabilizer Magazine-Type_Gas Rifles All Cartridge were produced by

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

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

Rail Handguard

- SAFE - SEMI - AUTO

Madbull 1inch outer barrel extension with inner barrel stabilizer Magazine-Type_Gas Rifles All Cartridge were produced byMadbull 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