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Snap motion 7A

A blue spring-loaded cocking piece has chamfered corners.

Axial movement of the pink push-rod forces the cocking piece against a spring-loaded pin set in frame. When cocking builts up enough force to overcom the pin spring, the cocking piece snaps over to the right.

Move the pink push-rod or the blue cocking piece to the left to get initial position.

The violet pins represent manual action.

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