Forgive my ignorance in the building of armour
But, is he not better glueing the straps, rather than riveting, as the CRL doesn't allow rivets for anything higher than level 2?
"Shoulder Straps
For 501st approval:
Shoulder Straps are securely mounted in front and may free float in back. They may be affixed with rivets, Velcro, or adhesive.
For level two certification (if applicable):
No visible rivets are allowed.
Shoulder straps do not have a flat surface at the ends.
Straps are ribbed 100%.
For level three certification (if applicable):
These are affixed in the front (no snaps, rivets or brads are visible).
These are affixed in the back (no snaps, rivets or brads are visible)."