Rem 700 in 30-06, 44 mag pistol, AR-15 M-4 carbine version, 12ga shotgun modified choke,Glock21 45 ACP. rounded battery for anything that walks in North America 4 legs or 2.
I have two lists for the four guns. The first is the idealist list and the second is the practical list.
Idealist list:
Barrett 50 cal (probably bolt action for reliability), Remington 870 marine 12ga, Colt M-16, Nighthawk 45ACP.
Practical list:
Springfield M1A .308, Mossberg 500 12ga, Ruger Ranch Rifle .223, Glock 19.
Aaahhh I forgot about the .22. For the ideal list I would not splurge and would go with the Ruger 77/22 bolt action. For the practical list I would go either with the semi-auto rifles like the Ruger 10/22 or the Marlin M60.