The Maktes Arms T-AB 1A bullpup rifle is a gas-operated multi-caliber select-fire modular weapon system designed to match the requirements of elite military and law enforcement units. Its removable barrel and magazine well allow to configure the rifle to fire 5.56x45 NATO, 5.45x39, 7.62x39, and other intermediate cartridges, feeding from standard AK or STANAG magazines. These features allow building a perfect tool for any mission or environment.