No Pumping Glitch

The No pumping glitch is a glitch where the Shotgun and the Double Barrel Shotgun is able to fire multiple rounds without the need of pumping (Which is the delay after shooting a round).

Steps
1: Equip the Shotgun or the Double Barrel Shotgun.

2: Get into Mission Mode or Multiplayer.

3: After joining in, get both of your hands and press the "Reload" button and the "Fire" button multiple times (Not at the same time) as quickly as possible.

4. Your shotgun will fire about 2-4 rounds without pumping.

Trivia

 * This glitch is useful against Elite Enemies if you get behind while they stand still as it is difficult to look around while using the glitch.