It was made by Crosman air gun co. Any JC Higgins air gun that starts with model # 126 is a Crosman any model that starts with # 799 was made by Daisy. Your model is most likely a Crosman model 180.
If I am correct about the Crosman model 180, then here is the link to the Owners manual (See Below)
The model 180 was made between 1956-1967
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