What the gun Paul Langan about?

It seems you're asking about Paul Langan and a gun. However, there's not enough information to understand what you're referring to. Could you please provide more context? For example, are you asking:

* About a specific incident involving Paul Langan and a gun?

* About Paul Langan's general views on guns?

* About a fictional story or movie where Paul Langan uses a gun?

Please provide more details so I can assist you better.