4 Barrel Shotgun (inspired by the Blundergat from COD:BO2 MotD) : r/PhantomForces

Blundergat, Call of Duty Wiki

3.75in grenade launcher from republic commando scales pretty well

Mob of the Dead: How To Get 4 BlunderGats and 4 Death Machines

4 Barrel Shotgun (based off of the blundergat) : r/PhantomForces

BFSG 1 Gauge shotgun. A Doom and Warhammer40k inspired massive

Experience the power of Call of Duty's legendary Wonder Weapon, the Blundergat. Handcrafted and detailed, this prop replica brings the in-game world

Blundergat - Call of Duty - Blasters4Masters

Mob of the Dead - Free Blundergat Easter Egg [Easy]

Ranger (weapon), Call of Duty Wiki

ArtStation - Call of Duty: Vanguard - Double Barrel Shotgun (Stock