Airsoft Franchi SPAS 12 3Burst 6mm. The Franchi SPAS-12 3-Burst by ASG is a pump-action airsoft shotgun, which has the unique feature of firing 3 6mm BBs simultaneously with one pull of the trigger. It has a metal barrel and a high-quality and durable plastic body. It uses a realistic 12cal shell as a magazine, which can hold up to 30 plastic 6mm BBs. Two such shells are included. An amazing airsoft gun in quality and design that closely resembles the real thing and does not go unnoticed by airsoft gamers.