It's the GameReady, PBR, Lowpoly model, it doesn't include reticle in it.
Technical Informations:
It's triangulated for better shading.
No ngons. No Uv Overlaps.
Clean Toplogy.
it's sized for nato standards.
it has 2 material sets, 4k Tex for Base and 1k Tex for Glasses.
Blender files are included and also it has Unreal Engine and Unity Engine textures which are extracted from Substance Painter. You can download textures from fbx download option.