I modelled and rendered this popular machine gun with 3ds max and marmoset.

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In the rar files there is 2 files.

1-) M2 browning without tripod but with all inner parts

2-) Texture files.

2-2) In the texture files there is 4 set textures with uvw mapped. (non overlapping)

1-) Body; 4k texture set metalness workflow.2-)Inner parts; 4k texture set metalness workflow.3-)Reload; 4k texture set metalness workflow.4-)Barrel; 4k texture set metalness workflow.

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You can open file with, 3ds max 2017, 3ds max 2018, 3ds max 2019 or new versions.

And also fbx and obj format supported.