I am happy to be of service
You will need an inch pound torque wrench because the action needs
to be removed from the chassis before you can install the FACC.
You may be able to find a low cost wrench online... it doesn't need to be fancy.
I went without the FACC for about 8 years so it shouldn't be a priority.
I do suggest that you buy an NSG one when you find one because they are not easy to find.
The AFG gap did catch my eye, but it being solid is all that matters.