On December 2, 2022, the Director General of the Estonian State Defense Investment Center Magnus-Waldemar Saar signed an agreement with the US Defense and Security Cooperation Agency for the purchase of six American-made M142 HIMARS (MLRS) Multiple Launch Rocket Systems with ammunition including rockets and missiles.
On July 15, 2022, the U.S. State Department made a determination approving a possible Foreign Military Sale to the Government of Estonia of M142 HIMARS (High Mobility Artillery Rocket System) and related equipment for an estimated cost of up to $500 million.
The Government of Estonia requested the United States to purchase up to six M142 High Mobility Artillery Rocket System (HIMARS) Launchers as well as up to thirty-six (36) M30A2 Guided Multiple Launch Rocket System (GMLRS) Alternative Warhead (AW) Missile Pods with Insensitive Munitions Propulsion System (IMPS) and Frequency Modulated Continuous Wave – Directional Doppler Ranging (FMCW-DDR) Proximity Height-of-Burst (HOB) Sensor Capability; up to thirty-six (36) M31A2 GMLRS Unitary High Explosive (HE) Missile Pods with IMPS and FMCW-DDR Proximity HOB Sensor Capability; up to thirty-six (36) XM403 Extended Range GMLRS (ER GMLRS) Alternative Warhead (AW) Missile Pods with IMPS and Side Mounted Proximity Sensor (SMPS) HOB Capability; up to thirty-six (36) XM404 Extended Range GMLRS (ER GMLRS) Unitary Pods with IMPS and SMPS HOB Capability; and up to eighteen (18) M57 Army Tactical Missile System (ATACMS) Missile Pods.