Window stop?

A quick learner says:
Not sure what this piece is but our windows have a warning sticker with A-X7164. The piece is sticking out and won't go back in. Is it replaceable?
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Casey from SWISCO responded:

Hello,

Have you seen our 26-362 sash vent lock? Compare its specifications to your existing hardware and let us know what you think. Thanks for posting! 

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