The 
Marlin Glenfield Model 30A in .30-30 Winchester
 is a reliable and popular lever-action rifle designed as an economy version of the Marlin Model 336. It was produced by Marlin Firearms under the Glenfield brand from the late 1960s into the late 1980s and is a sought-after firearm among hunters and vintage gun enthusiasts. 
Key Features and Specifications
Action: Lever-action, known for smooth cycling.
Caliber: .30-30 Winchester, a popular North American cartridge for medium-to-large game like deer.