[3] In 1972, Hughes Helicopters began a company-funded research effort to design a machine gun to fire the U.S. Army's M50 20 mm round.

The liner collapses into an armor-piercing jet of metal that can penetrate 1 in (25 mm) of rolled homogeneous armour at 500 m. The shell is also designed to fragment upon impact, killing unprotected, standing people up to about 5 ft (1.5 m) away under optimum conditions.

Features include an anti-hangfire system, a delinking feeder that exploits linked ammunition, and an extended-length barrel, which results in greater muzzle velocity and hitting power from the same M789 HEDP and NATO standard 30 mm ADEN/DEFA projectiles.

It is controlled by a Remote Operator's Console (ROC)—with either dual grips or a joystick—from a touch panel display and extended day color TV.

The system is planned for usage against drones by using a radar and a variety of sensors to track and destroy targets with a single shot.

[17] All together it weighs less than 400 kg (880 lb) and can be mounted on a flatbed truck, allowing for a more cost effective way of destroying drones compared to missile based systems.

[20][21] On 28 February 2018, the US Army announced that Stryker vehicles would be modified with sensors and weapons to fulfill an interim Maneuver-Short-Range Air Defense (M-SHORAD) requirement.

In June 2018, the Army chose Leonardo DRS to supply the mission equipment package, which partnered with Moog Inc. to integrate the Reconfigurable Integrated-weapons Platform (RIwP) onto the vehicle.

The Army chose DRS because of the flexibility of the reconfigurable turret to allow for growth opportunities and alternate weapon options, it posed less intrusion to the existing vehicle platform, as they have a desire to keep the Stryker as common across the fleet as possible, and it provided increased protection as the crew can reload ammunition under armor.

[24] The Marine Air Defense Integrated System (MADIS) fills the gap left by the retirement of the AN/TWQ-1 Avenger by the USMC in the mid-2000s.

The radar cues the guns onto a target, which fires M1211 High Explosive Proximity Self Destruct rounds capable of engaging UAS up to Class 2.

[27] The AGT was meant to be delivered within 30 to 90 days of the contract award, however by early August delays in the procurement process had prevented the full complement of trucks from being built.