Seeing as this thread's getting a lot of attention, figured I'd jump in and derail it a bit by asking if any company makes MP5 shingles like the open top M4 pouches, but obviously for MP5? Also, all of these suggestions are great for a beginner, loving the duct tape idea. and cargo pants = cheapest semi-effective mag holder.
"History shall be kind to me, for I intend to write it." - Sir Winston Churchill