1. Quick Start & Engine Import

• Unreal Engine: Import the FBX model into your project. Assign the textures to your material. Use the packed ORM map (R = Ambient Occlusion, G = Roughness, B = Metallic) and ensure 'SRGB' is UNCHECKED for the ORM texture.

• Unity: Import the FBX and 4K textures. Set the Normal Map texture type to 'Normal Map'. If using Standard/URP/HDRP Metallic shaders, assign the Roughness/Metallic channels accordingly.

• General 3D Software: Blender is included. For other software, connect the Base Color, Roughness, Metallic, Normal, and AO maps to your main shader.

2. Normal Maps Usage

• DirectX (+Y): Use for Unreal Engine, 3ds Max, and DirectX-based engines.

• OpenGL (-Y): Use for Blender, Unity, Maya, and Marmoset Toolbag.

3. Model Structure & Rigging Setup

• Modular Mesh Groups: Key moving parts (magazine, trigger, bolt, and safety selector) are separated as individual sub-meshes with proper pivot points set to their rotation/translation axes.

• Scale: Modeled to 1:1 real-world metric scale.

4. Support & Contact

If you encounter any issues, need custom texture exports, or have technical questions regarding integration, please feel free to send a direct message through the marketplace store support.