To help alleviate SWaP constraints, the Army has launched the Abrams Engineering Change Proposal (ECP) program designed to buy back as much SWaP as possible by redesigning and modernizing many elements of the tank. This ECP is a modification to the system that leaves the essential capability unchanged. The Abrams ECP program will help ensure the Army can seamlessly incorporate other programs of record into the Abrams well into the future, without degrading operational performance.

United States Army Article