It's the Mandalorian Neo-Crusader armor from KOTOR (the Knights of the Old Republic RPG video game). Based quite strictly on the original game geometry, and using the original texture.
You can find the 3D printed kits here: https://www.instagram.com/kaminoan_customs/
For more photos from the development of this model, and other related models, you can view my gallery page: http://peripheralarbor.com/gallery/v/CG+Art/Concept-based/SithTrooper/
Like this model, but need something a bit different? I take commissions! http://peripheralarbor.com/commission/
Actual license is "Public Domain" see details here https://ip.tryop.com/