Home > How to mount the BB Barrel


-- Instruction --

Step 1

How to mount the BB Barrel

1. Insert BB Barrel into RAP4 Marker with the bigger bore in toward the marker.
Make sure the BB Barrel is aligned flush with rubber grommet 

3. Install Muzzle Brake and tighten the 3 set screws. Make sure the set screws are tighten firmly to the BB Barrel. It is also recommended to use adhesive on the set screws to prevent the set screws from coming loose.