These are the weapons that were used by Hamas

A photojournalist was shown weapons inside the Gaza Strip by the Israeli army that they said had belonged to Hamas and had been found inside civilian homes. Lt. Col. Ido said that Hamas used the home as a weapon-making facility. "It's been a long two weeks of fighting. It's not an operation, it's a war. It is going to last time. It's going to take us time until Hamas no longer exists," he said. 

He added that they had not seen any civilians where they operated, and the people who used to live there had been given ample warning to leave to go to the south.
The Israeli military escorted international journalists, giving them a glimpse of the aftermath of 12 days of heavy fighting in the area.