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Be careful when adjusting your NPAS to ensure you don't totally unscrew the adjustment screw
It takes considerable pressure for the BB to be pressed into the hop-up rubber
- Food grade and non toxic (please do not eat it despite how tempting it might be)
- It maintains a constant contact surface on the top
GSI VFC M4 guide hop-up arm nozzle Be careful when adjusting yourThe GSI VFC M4 guide Hop Up Arm & Rubber Set is a high quality upgrade designed to improve the performance of your VFC AR gbbrs. It ensures consistent trajectories and resolves common issues with the stock hop up system. Key Features: Enhanced Stability Addresses the tendency of the stock VFC AR hop up system to produce upward trajectories even at zero hop settings. Reduces inconsistencies in shot grouping caused by vibrations during use. The upgraded
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