The MP5-SD is a compact submachine gun with a distinctive integrated suppressor, giving it a sleek, streamlined appearance. Its body is primarily constructed from high-quality black polymer with metal components, featuring a ribbed foregrip and a collapsible stock for practicality. The weapon's suppressor is cylindrical and slightly wider than the barrel, with a matte finish to reduce glare, while the overall design is angular yet ergonomic, optimized for close-quarters combat.