Abstract: An Airsoft shotgun firing mechanism has been developed that fires the spherical projectiles of each shot sequentially in rapid succession. The shotgun firing mechanism directs the airflow sequentially against each spherical projectile in the shot, thus pushing each spherical projectile out of the barrel of the Airsoft shotgun. The flow rates of the air are balanced for all the spherical projectiles so all of the spherical projectiles are accelerating when the last spherical projectile is fired. By balancing the airflows, the spherical projectiles have essentially the same energy. The relative acceleration of the spherical projectiles out of the shotgun barrel is determined or selected by balancing the size and configuration of a bypass channel versus the number or stack of spherical projectiles to be fired.

Abstract: A hop-up device for an airsoft gun allows a user to adjust the tension applied to a BB during the chambering of the BB in the airsoft gun. The hop-up device has an adjustable tension adjustment sleeve configured to constrict a desired amount around the BB. The tension adjustment sleeve provides tension on the BB when the air nozzle is seating, or chambering, the BB in the bucking lips of a rubber bucking prior to firing. By adjusting the tension adjustment sleeve, the user can increase or decrease the bucking lip tension on the BB to reduce or essentially eliminate the adverse effects from manufacturing tolerances, wear, and the like. These adverse effects can cause double feeding of the BBs, jamming, inconsistent firing, slow firing, midcap syndrome (the feed spring in the magazine is too strong and forces BBs against the air nozzle with excessive force), and the like.