Bail bond agents can carry firearms (like regular citizens) and make arrests in California. However, they do not have the same power as police officers to investigate crimes, enforce traffic laws, or cordon off specific areas.
Before giving us a call, make sure you have the following information handy: The full name of the person who was arrested. Where is the person being held for custody (you should include the name of jail, city, and county) The person's booking number.
You need to make sure you read your terms and conditions of your bond closely, most of them do contain weapons restrictions. Absent any such conditions, since it is not a felony conviction or pending felony, you should not be barred from purchasing a firearm.