KelTec R50

I purchased a KeTec R50 in California.  In two days it will be leaving California, never to return.  To be sold in CA the folding stock feature is eliminated, the stock cannot be folded.  I want to be able to fold it.

The folding feature being locked is usually done by some combination of replacing a spring with a solid dowel, or torquing down a screw.  If I have a diagram of the gun and folder I can usually undo it.  Or by knowing how the folder works.

Am getting nowhere on finding info - does anyone know how the KelTec folder works?