Gun crime is on the rise in Europe with the Schengen open border policy making it easier for criminals to move weapons across the continent.

In addition, Brussels says as many as 500,000 legally registered guns have been lost or stolen.

The European Union wants action, however any tightening of EU gun laws is likely to impact on registered owners.

Europe’s gun lobby is dead set against stricter regulation arguing that criminals already operate outside the law and more stringent measures will in no way stem the flow of black market weaponry.

On the Frontline investigates.