How do i request a copy of my article 15

You should request a copy of your military records. Here is the link where you can do this for free: http://www.archives.gov/veterans/ Note, for some Marine Corps records they may be at Quantico.

Just be aware that your Art. 15 record may no longer exist. If you received a summarized or your were not reduced in rank, it may not be filed in your Permanent file. That is, it would have been maintain in your SMIF at the company level, which would long be destroyed. Also, if you were reduced and you were a specialist or below at the time, it is very likely that it would not be in your permanent file (even though it should be). Too often the S-1 shop fails to add these documents to your record at that point. Once you hit specialist and your promotable to NCO, the records become relevant for Bd review and would likely be included in your permanent file. In this case the only records will be in your OMPF illustrating your rank and position at a given time period.