SIG SAUER SIG50 - Manual (Page 41)

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8.4 cleaning the Receiver and trigger assembly
1. Move the safety lever to the rear (Safe) position.
2. remove the bolt assembly.
3. Turn the rifle upside down.
4. remove the two action screws.
5. carefully lift the stock away from the receiver and trigger assembly.
noTe: clean the receiver and trigger assembly as a unit with a
degreaser. do not leave any degreaser on coated surfaces any longer
than necessary.
6. Wipe the receiver down with a light coat of oil. let stand for 15
minutes, then wipe or blow off all excess lubricant with a clean rag
or air.
7. Before replacing the bolt, make sure the barrel is free from
obstructions. grease bolt as per step 1.
8. after cleaning the trigger assembly, check to be sure there are no cartridges in the rifle, close the bolt, move the safety
lever to the forward (fire) position, and pull the trigger. The firing pin must fall.
repeat at least 5 times.
Warning: if the firing pin does not remain cocked, when the bolt is closed smartly, return the rifle to Sig Sauer.
9. cleaning should also be performed after long term storage, or after being subjected to rain, sleet, dust, snow, sand, mud
or saltwater.
Action Screws