Police Commissioner Mike Bush notes, in response, that data for 2010 to 2014 showed gun-related crime averaged just 1.3 per cent of all recorded violent crime. Firearms-related offending has, he says, "remained consistently very low". The association says that does not tally with the present-day reality of frontline policing.
Either way, the data does not accurately reflect the peril to police officers arising from their limited knowledge of the location and ownership of guns. When they attend a domestic dispute or execute a search warrant, for example, they may well be in the dark about the firearms present in a house.
They were far more aware when all firearms had to be registered. But that system was abandoned in 1982, and individual owners were licensed. Before then, the number of guns was relatively tightly controlled. Since, licensed owners have been able to accumulate as many guns as they want.
There have been calls to reintroduce a register, most notably after Sir Thomas Thorp's review of firearms control 18 years ago, but Parliament has not followed through.
The Police Association's concerns are strong enough to warrant the issue being revisited. The safety of police officers is paramount, and it should not take a tragedy to trigger action.
A firearms register would require considerable resourcing, and would not prevent some criminals obtaining guns. But fewer would end up in their hands, the guns used in offending could be more easily traced and fewer arsenals could be amassed. Knives or other weapons, not guns, would more likely be the weapon produced in any confrontation with the police.