It might be shocking for some Americans, but pro/anti gun is a political issue almost exclusively in the US. In the rest of the developed world, nobody is "pro" gun. Even far right loons (and I mean proper loons, like a motorist party or a bunch of weirdos screaming about vaccines in parliament) in the EU aren't "pro"-guns.
And yes, Piers Morgan is on the right of the spectrum as it exists in the UK and EU.