XM395 Precision Guided Mortar Munition

GPS guidance and directional control surfaces into a package that replaces standard fuzes, transforming existing 120 mm mortar bodies into precision-guided munitions.^[2] The XM395 munition consists of a GPS-guided kit fitted to standard 120 mm smoothbore mortar rounds that includes the fitting of a nose and tail subsystem containing the maneuvering parts.^[3][4]

laser designation as the guidance system because the enemy frequently ducked down behind ridges and rock outcroppings, so laser designation would have limited ability to target them, while a GPS round could give accurate targeting even when taking cover behind obstacles.^[5][6][7] In April 2010, the Army announced that ATK had won a competitive shoot-off during the winter against competitors Raytheon and General Dynamics, and been selected to provide a new precision-guided mortar under the APMI needs statement.^[8]

Infantry Brigade Combat Team received the first APMI cartridges in March 2011,^{[citation needed]} with plans to field them in all seven deployed IBCTs within six months. The first shell was fired on 26 March^{[citation needed]} by Company C, 1-506th Infantry, 4th Brigade Combat Team, 101st Airborne Division, which landed four meters from the target. Heavy mortars are traditionally employed at battalion-level for immediate fire suppression and support, but they were the primary indirect fire weapon available to remote forward operating bases, so guided mortars gave a battalion commander accurate artillery fire without needing to request an M982 Excalibur from a brigade-level howitzer. The ATK XM395 PGMM cartridge uses a standard M934 high-explosive 120 mm projectile body with a GPS receiver in the nose and computer controlled aerodynamic directional fins for stability and to keep it on the programmed trajectory. It has a multi-mode airburst, point detonation, and delay fuse. Unguided 120 mm mortars have accuracy of 136 m (446 ft) at maximum range, which can be reduced to 76 m (249 ft) with precision position and pointing systems. The PGMM can hit within 10 meters of a target, and often hits within four, making it seven times more accurate. Although not designed to replace unguided mortars, the PGMM allows mortar teams to eliminate point targets that would require 8-10 rounds using one or two. This lengthens the amount of time a typical team with 25 rounds can operate and increases the number of targets it can engage without needing resupply. It also expands potential target zones that previously required soldiers to clear because inaccurate artillery would cause collateral damage, since insurgents deliberately attacked from populated areas hoping troops wouldn't risk civilian casualties. The XM395 kit costs $10,000 each, much less than the guided Excalibur 155 mm shell. There is also no current requirement for guidance for 60 mm or 81 mm mortars.^{[3][9][10][11][7]}

M1129 Stryker Double-V Hull Mortar Carrier Vehicle (MCVV) mobile platform, it increases the battlespace where the guided rounds can be used.^[12]

SAL guidance to hit targets that have relocated and to function in a GPS-degraded environment. The Army closed its initial solicitation period for designs in January 2017, and plans to award multiple contracts by the end of the year, leading to an open competition in 2018 and production beginning in 2021 with 14,000 HEGM rounds to be produced.^[15]