How Does it Work: Blowback Action
This guide explains the blowback operating principle in firearms, drawing on expert analysis from Ian McCollum of Forgotten Weapons. It details how Newton's Third Law governs the action, emphasizing the importance of the cartridge case seal and the mass-velocity balance for safe operation. The guide highlights practical applications and limitations of blowback systems, referencing specific firearms like the Colt 1903 and MP18.











