Which capability allows the M777A2 to engage targets with GPS-guided precision?

The Excalibur projectile is specifically designed to utilize GPS guidance to achieve high levels of precision when engaging targets. This capability allows the M777A2 Howitzer to strike targets with remarkable accuracy, significantly reducing collateral damage and increasing effectiveness in various combat scenarios. The integration of GPS technology in the Excalibur enhances the artillery's range and effectiveness beyond that of traditional unguided projectiles.

The other types of projectiles mentioned do not offer the same GPS-guided precision feature. The M982 projectile, while also designed for precision, specifically refers to the Excalibur variant, making it a less distinct choice. The Laser Guided Projectile employs a different guidance method that relies on laser targeting, which may not be suitable for all scenarios. Finally, the Standard HE projectile lacks advanced guidance systems altogether, making it the least capable of engaging targets with the same level of accuracy as the Excalibur.