Cheers Tom, but 60mm won't do.

Material doesn't really matter too much, though stainless would be nice.

It's a long stock bolt for a FT stock.

I can get M7x70mm in a hex bolt, but I'd have to try to put a screwdriver slot in it, which ain't going to end up looking very pretty.

That's because I couldn't get a slim 11mm socket in the recessed stock bolt cup, to do up the hex.