Firearm design involves the engineering and creation of weapons that use gunpowder or other propellants to launch projectiles. Key components include the barrel, action, trigger mechanism, and magazine. Designers must consider factors such as safety, reliability, and ease of use, as well as the intended purpose, whether for hunting, sport shooting, or self-defense. The design process often incorporates advancements in materials and technology, leading to innovations like polymer frames and improved sighting systems. Firearm designers must also comply with regulations and standards to ensure their products are safe and effective. Collaboration with manufacturers and testing organizations is essential for successful development.