Help - Jammed Seatbelt Latch

[Green Monster]

The mechanism within the seatbelt/lap belt latch (ROBBINS-JR-6704)will not release when then button is pressed. The button will return after being pressed. It's the passenger side of a 1972 Blazer. It has been finicky in the past fee years thus requiring some wiggling while pressing the button to get the latch to release. However, this time it seems to have finally jammed up requiring a little more ingenuity to release it.

I'm stuck... can you offer a suggestion on how to release the seat belt latch?

Can the latch be taken apart for repair?

If it cannot be repaired or serviced then I need to find a replacment. I prefer to maintain stock appearance and keep the original style and color belt.