The plan was to make it as simple to assemble as possible. The laminates would be cut and planed to the correct thickness with the rail pre-routed.
The assembler would just have to glue the laminates together against a straight edge, cut the shape using a jigsaw then shape it using surforms or rasps or perhaps a dremmel type tool. If I go ahead I'll make a gun and write up a set of detailed directions with photos as I go. An average DIYer shouldn't have a problem.
Excellent that all sounds doable, even for me!