Depends on the situation/circumstances. Not one weapon is great at everything.
Battle Rifle: AR/AK
Pistol: Glock 19
Shotgun: Remington 870
Long range: Remington 700
Small Game: Ruger 10/22
If I HAD to choose 1 and only 1, it would be my AR.
I am sort of liking this. Maind modeification is I have a M&P15-22 in place of the ruger 10/22 and I dont have a long range rifle yet. My pistal is also the beretta 92 as i find i shoot it more accurate than a glock unless I dr the heck out of the trigger.