The 12.7 x 99 mm Armor Piercing Incendiary (API) round, distinguished by its silver tip, is designed for dual-purpose use: penetrating light armor and igniting flammable materials behind it. Equipped with a hardened steel core and incendiary composition, this cartridge excels in targeting vehicles, fuel storage, and lightly-armored positions. Typically used in heavy machine guns like the Browning M2 and anti-material rifles such as the Barrett M82 and M107, the API round offers exceptional versatility in both ground and aerial combat scenarios, ensuring maximum damage upon impact.