Ok gents it has been a couple of months and I now have my SP5 back from Brad at Bahnhof Machine.
I am no expert but I was happy with the whole experience from start to finish.
A couple of things here to say I have a TSC K Navy so I guess one could compare some differences but I have no problems with what Brad did. I also sent him a wore out Navy trigger housing from GSC surplus and he went above and beyond to make it look as good as It could.
The NFA info was deep dark engraved as well and is very well obscured but visible as per the regs. along with the remarking of warning info.
The turnaround time would have been quicker but the trigger housing took some time and resources to fix. He also refinished a A3 stock to match the gun and it turned out the same.
I am but one opinion but I think it’s good to go.
The pics can speak for themselves.
Thanks
Pics of trigger housing refinished and clipped /pinned .