Best firearm you have ever owned?
To answer this question is real easy.
The AR
With the AR I can do almost anything that would take a safe full of guns to accomplish.
Short range, long range, shoot a wide variety of rounds from 22 to 500 to even a 50cal to include shoot-shells and heck even a grenade launcher if I wanted to.
I can make the gun as light as needed or heavy.
I can use flip sights , iron sights, red dots, glass scopes of any range. Mount lasers and lights and carry the gun in many many ways with all the slings outs there.
I can use a 6 in to 32 inch barrel
I can make it a carbine or long gun or even a pistol.
Heck I think I will just buy another.
Nothing to me out there even comes near the AR! (Being the BEST gun I have owned.)