The safety lever on the right side pivots on the bottom. The pivot is a shaft that runs horizontally 90 degrees to the bore axis. With the lever in the forward position this shaft blocks the sear from moving down to release the sticker/firing pin. It also pushes forward on a plunger at the base of the safety lever that projects out and engages a hole in the bolt handle that stops the bolt handle moving from the fully locked position.

Hope this helps. I know what this is supposed to say but I don't know if it is actually clear or I missed something.

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