The "Sigma" skin captures attention with its refined and enigmatic design. The primary material is a polished, light-colored metal with a cool tone, giving the weapon an elegant and contemporary appearance. This metallic sheen creates a sense of sophistication and attention to detail, with perfectly smooth surfaces and precise, minimalist lines.

The black coating, applied to select parts of the skin, is enhanced with a fine pattern of green hexagons. This coating not only visually contrasts with the cool metal but also adds uniqueness and depth to the design. The green hexagonal patterns give the impression of a mysterious network, emphasizing the enigmatic and high-tech nature of the skin.