Siegfried Mannlicher was an Austrian firearms designer known for his contributions to the development of military rifles. He is best recognized for the Mannlicher rifle, which featured a unique straight-pull bolt action, allowing for faster reloading and improved accuracy. His designs were influential in the early 20th century and were adopted by various military forces. Mannlicher's work extended beyond just rifles; he also developed several other firearms and ammunition types. His innovative approaches to firearm design have left a lasting impact on the industry, influencing later designs and manufacturers, including the Steyr Mannlicher company, which continues to produce firearms today.