The JC Higgins Model 45 in .30-30 caliber is a lever-action rifle that was manufactured by Marlin Firearms for Sears, Roebuck & Co. and is essentially a rebranded Marlin Model 336C. It was sold under the JC Higgins brand from approximately 1958 to 1964 and is popular among collectors for its quality construction, which is often considered comparable to contemporary Marlin rifles. 

Key Specifications

• Manufacturer: Marlin Firearms (for Sears, Roebuck & Co.).
• Caliber: .30-30 Winchester.
• Action: Lever-action, side-eject.
• Barrel Length: Typically 20 inches.
• Stock: Hardwood (often birch, which was a less expensive wood choice at the time), with a non-checkered pistol grip and forearm.
• Sights: Iron sights, often includes a leaf-style rear sight, and is drilled and tapped for a scope mount.
• Safety: Features a half-cock hammer safety position, common for the era, without the later added cross-bolt safety found on some newer Marlin models.
• Magazine: Full-length tubular magazine, holding 6 rounds (6+1 capacity).
• Value/Collectibility: While once considered less valuable than name-brand Marlins, its collectibility is increasing due to its quality and historical significance as a "store brand" firearm.