Beretta 84B / 84BB / 85B / 85BB Firing Pin. This firing pin is a Beretta factory original replacement component. Made of steel, the firing pin is responsible for striking the primer of the live round in the chamber. This steel firing pin is a direct replacement for Beretta 84B, 84BB, 85B, and 85BB .380 Auto pistols. This OEM part is ideal for replacing a broken or worn striker or to keep as a spare. You can rely on genuine Beretta components to keep your pistol in top operating condition.