We cannot evaluate work experience, but a 5-year university degree from Russia is already equivalent to a combined Bachelor's and Master's degrees. Several years ago this wasn't the case, so you should get a new evaluation.

The first significant guidelines were submitted to the ENIC conference in Helsinki titled "Guidelines for the Recognition of Qualifications from the other European Countries in the Russian Federation and of Russian Qualifications in the other European Countries." This was sponsored by UNESCO.

Some US evaluation agencies continued to recognize Russian 5-year degrees as Bachelor's until as late as 2003. For example, we've seen at least one ECE evaluation that still said Bachelor's in 2001, but their newer evaluations of the same degrees say Master's. AACRAO also seems to recognize them as Master's.

2003 was most likely the tipping point because that's when Russia joined the Bologna process. At that point Bachelor-Master programs were introduced although the Specialist program still exists. Master's and Specialist graduates are eligible to continue to a PhD program (Aspirantura) whereas Bachelor's graduates are (usually) not. As of 2010 over 90% of students still choose the 5-year Specialist degree because employers prefer them.

You can ask them to review the evaluation, but ultimately it's their decision.

The US equivalence would most likely be 'first professional degree in law', or Juris Doctor, but this should be based on an official evaluation. There is no equal international qualification. It is usually organization's opinion based on research and approved universities/courses. An important distinction is that someone with a foreign degree, even if found equivalent to JD, is not likely to pass the bar exam required to practice law in the US.

A university application is not likely to require the US equivalence. A university usually requests, or does the credential evaluation to determine what it is.