Fun fact is that the A280CFE Sniper Rifle configuration is practically identical to the standard rifle configuration of the A300, so technically you're getting five weapons here and not four.
Screenshots:
Hidden/Spoiler:
Credits:
-Pandemic for the mod tools.
-Textures from Google images and the Rogue One Visual Guide
-EA/DICE for some texture parts carried over from the A-180 and for a small snippet of texture taken from a screenshot of SWBF2.
EDIT: Updated because the scope was comically small so I've adjusted it.
EDIT #2: Updated the post with newer versions of all guns, which have better proportions. I also went full-hog and created all the mod attachment versions of the A280CFE (there's several variations not shown in the screenshots).