Which one?
take apart the whole gun
Ask a gunsmith for help or ask the maker for a manual
Best left to a gunsmith
Take it to a gunsmith and ask for help
Can't be answered correctly without knowing who made it.
You can get a manual at S&W's website for free.
go to: forum.m1911.org and ask your question
Look in the owner's manual. You can get one for free from S&W.
I lost owner's manual You need to check the owner's manual.
On the left side of the safety switch there is a pin that blends into the pistol pretty well. take that pin out and the gun should come apart.
Best to ask a gunsmith for assistance.