Home Minister Geoff Mahy said the work that has started must carry on.
BBC: Guernsey States December meeting
2.
However, Deputy Mahy said the past decade had seen an increase in the number of "lone shooter" incidents in the UK and further afield.
BBC: Guernsey Police armoured vehicle defended by minister
3.
Deputy Geoff Mahy, who is standing down from the States in April, said it had been agreed 15 months ago as part of upgrades to the force's firearms unit.
BBC: Guernsey Police armoured vehicle defended by minister