Guns, Dogs and Blades QnA

Bad Sport said
I have not used this, but I may at some point.

KEL-TEC SUB-2000 Optic Mount

Skip to the last 2 or 3 minutes to see finished product and operation, up to that point it's just putting screws in, lol.

That was a tedious video... but it does seem to be a solution. It does add some width to the package when folded but it gets past the main problem.