The Jackhammer is a type of automatic shotgun that produces a great amount of fire power and damage in one.It is only featured in the first Max Payne. Along with the M79 Grenade Launcher grenade, and molotov cocktail, it has some of the highest damage output in the game. It is first found in Backstabbing Bastard, off BB Hensley's henchmen.
Not many enemies are found wielding the Jackhammer, and ammuntion is more scarce than lesser weapons in-game. Only around 150 ammo for the Jackhammer is found throughout the entirety of the game.
The Jackhammer has an unknown ammo capacity and a magazine size of 12. It can kill most enemies in 2-3 hits at mid-to-close range and has the fire rate of a Beretta.