WHAT IS THE MOST RELIABLE GUN?

In your opinion,

what is the best gun to use to almost guaranteea kill?

Shotgun i think, but sniper as well, test them or a awp

SMGs like MP5, MP7 or weapons like that.
Maybe you can use Scout if you want.

the deagle is most reliable. jk probably awp if you have good flicks and reactions but its preference

the most reliable gun in the game would be the ak47