I would second that notion, But I would rap it firmly with a plastic head hammer straight on the thumb latch a couple times, then soak a bit more. Then see if it will moveSometimes just need to knock the rust loose. just my humble opinion.
If I had read through, would have seen that it is all...
I acquired this in a roundabout manner, but I know it came from Aim Surplus as a department of corrections trade in. Standard Catalog of Smith & Wesson lets me know that by serial number, it was manufactured between 1972-1973. I am wondering if anyone knows what the various markings represent. I...