It seems almost every gun in the game came up at least once in here. I think that by omission anywhere in this thread, we now can confirm the Executioner is the WORST gun in the game.
Lol... Executioner is my favorite pistol. I love it when I get 1 shot kills with it.
I'd have to say the SCAR-H is the best. Highest damage for a default full-auto weapon, second best range for a three hit kill behind the MK48 and tied with the SWAT-556, LMG penetration, good recoil if you can actually control it. All of this makes the SCAR-H a great weapon for aggressive or defensive use.