BUL Armory SAS II TAC 4.25″ Magazine: Essential Info The BUL Armory SAS II TAC 4.25″ uses high-quality, double-stack magazines that typically hold 17–19 rounds in 9mm. These magazines are precision-engineered for reliable feeding, robust construction, and fast reloads under pressure. Key Magazine Specs Caliber: 9mm Capacity: 17–19 r