Who repair j c Higgins repeater bb rifle model?

Check the model number. If it starts with 799. it was made by Daisy. If it starts with 126. it was made by Crosman. If it is a Crosman (126.) model then Crosman offers a locater service (Free) to locate repair shops that repair older Crosman airguns. If it's a Daisy (799) model then I suggest you contact Daisy and ask them..

See the two links below.