The heavy blaster arm represented a commercially available mechanical limb fitted with a heavy blaster, specifically designed for protocol droids. These arms, usually sold as a set of two, were cylindrical in form and featured a dark gray color. This item was a commodity during the Clone Wars, a significant galactic war that raged from 22 to 19 BBY between the Galactic Republic and the Confederacy of Independent Systems.
Within the online game Star Wars: Clone Wars Adventures, the heavy blaster arm was included as part of the Protocol Droid Part Pack II for players to utilize. It, in conjunction with the Tusken language pack, was available for purchase at a price of 300 Station Cash.