It is a pistol from Call of Duty Advanced Warfare made of Knex. Although half of its in-game variants suck, the base one is nice. The Knex version is very nice.

Step 1: The Real Deal

This is a removable mags Atlas 45. The specs of it are shown.

PROS
-distance is great with good rubber bands
-looks nice
-removable mags
-trigger
-durable (I dropped it many times now)
-realistic

CONS
-1:1 scale, the Atlas 45 is a very large gun
-no slide
-ammo sometimes falls out