E10 STL files- input request

[Blackwatch[CMD-DCA]]

Were working on the Andor troopers that carry E10s, and there are a few differences, but in the end its an E10.

What STL file is acceptable as a base for the E10? I see one on CG trader thats 46 USD for the file. Another on Mudtrooper.uk is free.

Has anyone printed this that could tell me about the file itself?  If it reasonably accurate without a lot of surgury? Im not worried about making the bits to make the Andor E10, thats no problem, just curious about the difference in the free file vs the $46 file, if any.