It is believed that the weapon will be imported to European criminals within days, as officials fight to control the borders amid terror fears following a series of terrorist attacks in Europe in recent months.

Made by the Minnesota-based manufacturer, Ideal Conceal, the 9mm double-barrel pistol known as the “iPhone Gun” has been pre-ordered 12,000 times.

The company behind the legal gun said: “In today’s day and age, carryin