Bow Master Aluminum CNC Hop-Up Adjustment Wheel Set w/ Tool for Umarex (VFC) MP5 Gen 2 Series GBB (N

Bow Master Aluminum CNC Hop-Up Adjustment Wheel Set w/ Tool for Umarex (VFC) MP5 Gen 2 Series GBB CNC Aluminum Construction An adjustment tool is also included for easier hop up adjustment. Suitable For Umarex (VFC) MP5 Gen2 Series Airsoft Gas Blow Back GBB Rifle Airsoft Guns