Interesting design. I don't understand the purpose in the combination bolt/semi auto, but unique nonetheless.
I have a 10/22 like that: it starts as a semi-auto, then becomes a straight-pull bolt gun as it gets dirty.
Not quite unique, there was the Stevens Model 87B. I have always hoped that Ruger would eventually make a 10/22 version of the Model 87B--intentionally/mechanically operated bolt action and not the dirty gun operated variety:
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