Revolver: hard to choose between SP101, GP100, and Blackhawk.
Semi-auto pistol: Glock or Makarov PM
Rifle: Mosin Nagant (except for those barrel band retaining springs in the stocks) or SKS.
Shotgun: Remington 870 (although the Mossberg isn't far off)
Easiest one over all though is a Pedersoli 'Kentucky' percussion pistol. Not really fear since it's just a single shot, but hey it goes boom and throws lead.
ps. I now see I've been suckered into posting in the same thread I posted in three years ago.