The early 44 Carbines had no cartridge cut off therefore all cartridges had to be run through the action when unloading, they also had an aluminum butt plate these would be of early 60s vintage. Later the cartridge cut off was added and the butt plate went plastic. I have a 44 carbine toped with a eotech type sight. Lovely light, fast, easy handling little rifle, great for in the bush when dogging. My go to gun when setting and checking bear baits. I would not part with mine. I have had mine for years and never had a malfunction or issue with it.