SIG SAUER SIG516 Rifle - Manual (Page 82)

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bolt and carrier assembly
• extractor spring.
• Tailshaft
• cam Pin.
• Bolt rings.
• locking lugs.
• rail Surfaces, top and bottom.
• Bolt bearing surface.
lower Receiver assembly
• fire control springs, pins, detents, pivot and takedown pins.
• Trigger Sear Surface, disconnect Surface.
• Buttstock release levers.
• recoil buffer
• action spring
• receiver extension