It does indeed, When I first started to build my L119A2 GBBR I used a long rail and locked it to semi with an output of just undre 1.9j , gamed it that way about twice before switching to the short version and fitting an NPAS. I just didn't find the extra power outwieged the MED hassle
Best way to improve range without getting caught up in 30M MED's is to take a look at the hop. Have a look on the MWS thread about what can be done. My WE GBBR's can happily match any aeg for range and accuracy so the MWS certainly should be able to. I never use F/A either, with 30 round mags it's all about working closer, picking your shots and maybe double tapping