The AADMOUNT caps have a LIFETIME REPLACEMENT WARRANTY and they are made in the USA. What more could you possibly ask for?
If you don't think they are durable enough, by looking at a picture...then don't get them.
If you want to test them and are not happy, return them. Jon will back up EVERYTHING he sells. 100%
Another option for the Nightforce, and it's what I would have suggested prior to the AADMOUNT is the Tenebraex covers, but they are always sold out.
You'll need ONE OF THESE
for a flip up objective cover.
and either, an ARD
or a threaded addapter for a 56mm NXS
so that it fits.
And for the eye piece, you'll need this one
They are also VERY durable, I believe it's what Premier Heritage uses on their tactical line.