Soak it for DAYS in a bucket of KROIL or a mixture of 50% acetone and 50% automatic transmission fluid... then try to work the parts away from each other. Do this until you have success. The safety bar that stands in front of the sear is not being held into the frame by anything other than rust since your photo shows the safety lever is broken... after soaking try hitting this part on top with a brass punch... if it moves you are in business for taking the gun apart...
...but once the magazine is removed, I wouldn't put too much effort into disassembly... just mount it on a plaque with the grip side up and it will make a great wall hanging in your den or gun room. Just my $0.02
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regards, -John S
"...We hold these truths to be self-evident that ALL men are created EQUAL and are endowed by their Creator with certain UNALIENABLE rights, and among these are life, LIBERTY, and the pursuit of happiness..."
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