This was intended to increase the utility of vessels equipped with the weapon, especially in areas in which the US Navy exercises absolute sea supremacy. Ammunition AGS cannot use ammunition designed for existing artillery, so each type of ammunition must be designed and manufactured for AGS. The only type to be designed was the LRLAP. LRLAP procurement, however, was cancelled and there are no plans to replace it. Other projectiles were examined to replace the LRLAP, but since it is the only munition designed to be fired from the AGS, the barrel, software, cooling system, and automated magazines would have to be modified to accommodate a different round. It could cost up to $250 million in engineering costs to modify all six guns on the three ships to accept a new round. After some research had been abandoned into whether the M982 Excalibur guided munition could be adapted for use with the AGS, officials announced in January 2018 that there was now no plan for any replacement round for the AGS. Instead, Naval Sea Systems Command and the Chief of Naval Operations staff would "monitor new technologies" which might be used with the AGS system in the future. In particular he noted that the BAE Hypervelocity Projectile testing, a cross service 127 mm (5") Naval and 155 mm land, low drag self guided Mach 7 capable round originally intended for Railguns, was achieving range close to the original LRLAP specification while having superior rate of fire and accuracy. As of 2018, The HVP rounds were estimated to cost around $25,000 for a surface-to-surface 127 mm (5") or $86,000 for an anti missile variant 155 mm round. LRLAP The development of new ammunition for the AGS under the name Long Range Land Attack Projectile (LRLAP) was one of the major advances offered by the AGS program. The munitions were highly precise, with a circular error probable (CEP) of or less. Lockheed Martin conducted a flight test of the munition in July 2005, reporting a flight distance of . The LRLAP ammunition features separate projectile and propellant portions. Total weight is , including a bursting charge of . The maximum length of the combined munition is , amounting to about 14 calibers. In 2004, the manufacturer stated that the goal for the LRLAP per-round cost was $35,000. Shortly after the was commissioned but prior to weapons system integration, the U.S. Navy moved