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Take it to a gunsmith.
Ask a gunsmith for help or contact the maker for a manual
Follow instructions in owner's manual
Best to ask a gunsmith for help.
Go to your local gunsmith and ask for help and supplies.
Recommend you ask a gunsmith for assistance.
No. if anything clean connections with a special cleaner
A revolver. Least amount of moving parts, and the least sofisticated. Easiest to clean and keep functioning/repair. "A revolver never jams."
You can request a owner's manual for fee at the S&W web site.
buy a pistol cleaning kit that matches the correct cal.
Blue Book of Gun values, ask a gunsmith for help
One must dislodge a gun into parts before cleaning.