Greener Police Mk III

Greener's Police Gun, employs a Martini action with safety lever on the right hand side. This example is stocked slightly beyond the muzzle and has a steel fore-end cap. It is chambered for a special bottle-necked cartridge with a deep anular ring around the primer. The striker is flanked by two longer prongs whish are accommodated by the anular ring. This prevents ignition of a conventional cartridge, should the gun be stolen.

Bron: imperial war museum