What Iran has been shipping abroad has been some disturbingly sophisticated weapons systems, such as longer-range and more precise rockets that it's trying to get into the Gaza Strip that could be used to hit Tel Aviv, and also anti-aircraft missiles and anti-tank missiles. There are disturbing indications that what Iran is providing is considerably more sophisticated than small arms to Hamas, and certainly Iran has for quite some time been providing much more sophisticated weaponry to Hezbollah, which has become a pretty impressive light infantry force.
On April 23rd, 2009. See this statement in context.