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The (:dancingbanana:) magazine for 10/22 was the first to come to mind. I've seen the spring in other mags though, just don't recall which ones. The Mitchell was a clockwork type spring you had to...

Many "extended" .22 rimfire magazines use the same type curley-que spring that straightens out when loaded and curls back up as the mag. is emptied.
I've never studied a Remington-Lee magazine...