It came to my attention that the barrel of the M249 Machine gun is twice the size it is supposed to be.
Now that of course isn't something big to worry about, although I suggest shortening the barrel as it does not reflect the model of the gun in real life.
Below I have a attached one info image, and two comparison images, showing the contrast between the real M249 and it's battlebit counterpart.
Thank you for your attention.
I hope the images help!