No, not a fight . . . figure compatability.
Looking at the US infantry range for Europe, don't like the pose of the .30 cal team AMF3.
If I used the pack from the Pacific Marines - MC17 - would they look out of place?
AMF3
(https://39.cdn.ekm.net/ekmps/shops/89204c/images/-n-AMF3-n-.30cal-MG-team-3--3370-p.jpg?v=129e769d-d879-49da-8b8b-95a29a1eb609)
MC17
(https://39.cdn.ekm.net/ekmps/shops/89204c/images/-n-MC17-n-.30cal-MG-team-3--3456-p.jpg?v=129e769d-d879-49da-8b8b-95a29a1eb609)
I think you'll get away with a paint conversion no problem!
Aye, thought so.
I guess I'm asking is there anything inherently different between Army & Marine uniforms that's noticeable at 10mm scale?
On that point, I'm fairly sure for any differences we're minimal to the point you could either remove with a scalpel, or just paint in European theatre colours and no one will notice.
If you're worried about absolute accuracy, I'm not sure I have an answer for you ;D
The only difference is... do you prefer your machine gunners prone or crouched?! Slap US Army Green on them, they'll do fine :D