The Marines are gunning up the amphibious combat vehicle. Is a 40mm cannon in its future?
By: Todd South  
At Modern Day Marine 2018, BAE Systems displayed a more lethal version of an ACV. While the turret configuration hasn't been bought by the U.S. Marine Corps, the company is showing off potential in that area.
The Marine Corps is looking at a 30mm gun variant for its newest platform ― the amphibious combat vehicle ― and there’s a chance that weapon system will have the ability to switch to 40mm.
The firepower upgrade is mostly in industry experimentation right now, as the Corps is focused on the 30mm work, which includes the ACV manufacturer’s testing of a variety of guns and turrets.
The ACV family of vehicles will include a personnel carrier, command and control variant, a recovery version and the guns or 30mm option.
https://www.marinecorpstimes.com/news/your-marine-corps/2019/04/29/the-marines-are-gunning-up-the-amphibious-combat-vehicle-is-a-40mm-cannon-in-its-future/
