Tactical Ordnance can do it, but they are in Ontario.
You try blackbox customs in Calgary
Tactical Ordnance can do it, but they are in Ontario.
And swamped until May. FOC supposedly does it but can't get much updates from them about this service on their thread.
I think you will find that none of these places do it in house. There are also lots of different coatings these days, not just TIN.
We use Voestalpine in Mississauga. We send them punches and die-steels for coating before shipping to auto parts manufacturers .
http://www.voestalpine.com/highperformancemetals/canada/en/services/pvd-coatings/
Any pics? Gun related or non?