Special Part(s): GD_Weap_AssaultRifle.A_Weapons_Legendary.AR_Jakobs_5_HammerBuster GD_Weap_AssaultRifle.Barrel.AR_Barrel_Dahl_HammerBuster GD_Weap_AssaultRifle.ManufacturerMaterials.Mat_Jakobs_5_Legendary [Hammer Buster Variants] The Hammer Buster is a legendary Jakobs assault rifle. Hammer Buster is obtained randomly from any suitable loot source but has an increased chance to drop from McNally located in The Dust.