Textron launched the Fury precision weapon from a Shadow 200. By May 2015, the Marine Corps had run out of funding for weaponizing the RQ-7, and the Army had shown little interest in continuing the effort. The Army's stance is that the Shadow's primary capability is persistent surveillance, while there are many other ways to drop bombs on targets and adding that to the Shadow would add weight and decrease endurance. Nightwarden A test version called STTB flew in summer 2011. AAI is developing a bigger version called M2 with a blended wing to include a 3-cylinder Lycoming heavy fuel engine, and began flight testing in August 2012. The Shadow M2 has a conformal blended body that reduces drag, wingspan increased to , and is heavier. It can fly for 16 hours at altitudes up to . Its endurance and service ceiling are comparable to Group 4 UASs like the MQ-1 Predator, so the company is pitching the M2 as a budget-conscious alternative to larger unmanned aircraft. It has a greater payload to carry synthetic aperture radar (SAR), wide-area surveillance, navigation, signals intelligence, and electronic warfare packages. It also has the ability to be controlled beyond line-of-sight through a SATCOM link. Although the M2 uses the same internal components as the RQ-7B Shadow 200 and is compatible with existing support equipment and ground infrastructure, its greater weight necessitates changes to the existing launcher. The Shadow M2 uses 80-85 percent of the components of the Shadow V2, while allowing for an additional of capability with total airframe weight increased to . In June 2017, Textron introduced the Nightwarden TUAS as a production-ready model of the developmental Shadow M2, the change in name due to significant improvements and enhancements to the system such as greater flexibility and combat capability, SATCOM features, and enhanced command-and-control. The aircraft has a range of , maximum speed of , endurance of 15 hours, can fly at an altitude of , and has a maximum takeoff weight of with a dual-payload bay with a capacity of . Shadow 600 AAI has also built a scaled-up Pioneer derivative known as the "Shadow 600". It also resembles a Pioneer, except that the outer panels of the wings are distinctively swept back, and it has a stronger Wankel engine, the UAV EL 801, with . A number of Shadow 600s are in service in several nations, including Romania. SR/C Shadow