Other than for future fun projects from the discarded parts, why don't you build one from the actual ground up altogether? The stock bolt handle is a cheap pot metal anyway, might change it to a genuine steel / CNC aluminium, as you would replace the spring with Rapax 4J anyway. As for the wooden stock, they might be a bit difficult to get and worst case scenario you'll have to put up with faux wood for a while to use it, while waiting for the real wooden one to be restocked. Slong made one that is familiar to a tactical stock for the ergonomic, if that's more of your thing.