I made a step by step tutorial series on modeling a combat knife game asset in Blender and texturing it in Substance Painter.
The blend file includes all the textures you'll need for a game engine, all 2048x2048. Normal map is baked for OpenGL so it works in Blender and Unity. If using in Unreal or other DirectX applications you'll need to flip the Y/green channel or use the "Flip Green Channel" option in Unreal.
Nice! Love your work and your tutorials :3 just wondering how you guys can bake that good normalmaps. If i bake the normalmap of any gun/ hard surface stuff, i always get very sharp edges.