The Osteo Striga is a high-detail, ornate submachine gun with a dark, organic aesthetic reminiscent of bone and decay. Its body features intricate carvings and embossed patterns that glow with a faint green luminescence, suggesting a necrotic or toxic energy source. The weapon's form is asymmetrical, with a curved magazine and angular muzzle, combining both organic curves and sharp geometric lines for a menacing appearance.