FTA Airsoft Flat Hop Arm For Hop Up Unit
The set comes with the selected arm model, the nub and a fitting tool to help fit the arm.
You can select from AK, NGRS, Krytac, Prowin/SHS M4 or standard M4 hop unit arms. Instructions for installation can be found here we highly recommend getting these arms fitted by a professional technician.
Please double-check the shape on your original hop arm to ensure it’s the same one.
You’ll need a hop rubber with a smooth internal surface, suitable barrel, hop unit, arm and nub, super glue and a cocktail stick or similar. You’ll probably need a sharp blade of some sort.
You can order the hop nub only which will work on the standard hop arms of Scar H, 417 and any other NGRS that uses the same hop unit.
- 5 types available
- 3D printed in ABS
- For Flat Hop mods only