Warhead (AW). Range: . GMLRS rocket that replaces the M30's submunitions with approximately 182,000 pre-formed tungsten fragments for area effects without unexploded ordnance. Entered production in 2015. M30A2 rockets with Alternative Warhead (AW). Range: . Improved M30A1 with Insensitive Munition Propulsion System (IMPS). Only M30 variant in production since 2019. M31 rockets with high-explosive unitary warhead. Range: . Entered production in 2005. The warhead is produced by General Dynamics and contains 51 pounds of PBX-109 high explosive in a steel blast-fragmentation case. M31A1 rockets with high-explosive unitary warhead. Range: . Improved M31 with new multi-mode fuze that added airburst to the M31's fuze point detonation and delay. M31A2 rockets with high-explosive unitary warhead. Range: . Improved M31A1 with Insensitive Munition Propulsion System (IMPS). Only M31 variant in production since 2019. M32 SMArt German GMLRS variant produced by Diehl Defence carrying 4 SMArt anti-tank submunitions and a new flight software. Developed for MARS II but has not been ordered yet and therefore not in service as of 2019. ER GMLRS rockets with extended range of up to . Rockets use a slightly increased rocket motor size, a newly designed hull, and tail-driven guidance, while still containing six per pod. It will come in unitary and AW variants. The first successful test flight of a ER GMLRS occurred in March 2021. In early 2021, Lockheed Martin anticipated putting the ER into its production line in the fiscal year 2023 contract award and was planning to produce the new rockets at its Camden facility. In 2022 Finland became the first foreign customer to order ER GMLRS. ATACMS The Army Tactical Missile System (ATACMS) is a series of 610 mm surface-to-surface missile (SSM) with a range of up to . Each rocket pod contains one ATACMS missile. As of 2022 only the M48, M57, and M57E1 remain in the US military's active inventory. M39 (ATACMS BLOCK I) missile with inertial guidance. The missile carries 950 M74 Anti-personnel and Anti‑materiel (APAM) bomblets. Range: . 1,650 M39 were produced between 1990 and 1997, when production ceased in favor of the M39A1. During Desert Storm 32 M39 were fired at Iraqi targets and during Operation Iraqi Freedom a further 379 M39 were fired. The remaining M39 missiles are being updated since 2017 to M57E1 missiles. The M39 is the only ATACMS variant which can be fired by all M270 and M142 variants. M39A1 (ATACMS BLOCK IA) missile