- Firearms Unknown National City
- Address: 416 National City Blvd, Unit B, National City, Ca 91950
- Telephone: 619-507-3174
- Opening hours: 11AM - 7PM Every Day
- Firearms Unknown Oceanside
- Address: 1906 Oceanside Blvd, Unit K, Oceanside, CA 92054
- Telephone: 760-730-5599
- Opening hours: 11AM - 7PM Every Day
- Hiram's Guns/Firearms Unknown El Cajon
- Address: 660 S Magnolia Ave, El Cajon, CA 92020
- Telephone: 619-442-5353
- Opening hours: 11AM - 7PM Every Day