Norwegian Police Force & Arms:

I said before ALL Norwegian policemen are armed, they may or may not actually be carrying their weapons.

"Norwegian police do not carry firearms on a daily basis; they keep them locked down in the patrol cars, and if need arises they have to get permission by the police commissioner or someone authorized by him or her. If there is no time to contact a superior, a police officer may arm himself and anyone under his command. From 1994 to 2004 the Norwegian police fired approximately 79 shots; 48 of these were fired during the Nokas Robbery in 2004.

Type of firearms as previously stated:
H&K P30 9mm Semi-Automatic Pistol
H&K MP5 9mm Sub-machine Gun

Time the Police first heard about the incident 17:27 - Perpetrator under arrest 18:27. The shootings were taking place in a remote location in the immediate aftermath of the largest terrorist bomb ever exploded in Norway (The ONLY Terrorist Bomb exploded in Norway) with the Police and the Emergency Services at full stretch.

The specialist police squad were notified, mobilised and underway 11 minutes after first notification. They had to travel by car from Oslo - they did that journey in 31 minutes (it took Breivik over an hour, I know blue lights help, but the traffic chaos in Oslo when the Police made the trip would hinder them). Time to get onto the island and apprehend the gunman 16 minutes. Not bad.

The ONLY thing that would have prevented it, or at least reduced the slaughter would have been if someone on the island had had something to divert the gunman's attention and give him something to think about - i.e. a gun (Basically works in exactly the same way that GWB's tactic did in attacking Al-Qaeda - Take the initiative from your attacker).