: 221 M109L (M109 modernized to A3 equivalent with Italian-made 155 mm/39 calibre barrels), replaced by PzH 2000 : Unknown when entered service or when withdrawn : 126 as of 1998, replaced by the PzH 2000, 5 sold to Austria (1997), 87 to United Arab Emirates (1997), 121 to Jordan (2011–2012)) : 33 in storage after donation of 22 to Ukraine in 2022. 55 in storage in 2021. Inventory of 14 M109A3GNM + 42 M109A3GN in 2019. : 6 A2 since 1981 (Portuguese Army). Currently retired from active service and replaced by 18 M109A5 in 2002. : 140+ entered service in 1965, upgraded to -A1 and -A2 standards, 83 sold to Austria in 1994 (51 A2, 32 A3) M109A4 : 64 A4BE of which 36 A4BE sold to Indonesia (2017–2018), the others to private companies in 2015. From these 28 units were bought by the UK to be delivered to Ukraine. : 76 A4B+. Used by the Canadian Forces from 1967 until 2005, when they were phased out. All the vehicles had been modernized to the M109A4B+ SPH standard in the 1980s. They were primarily used by the 4 Canadian Mechanized Brigade Group in Germany. International equivalents 2S3 Akatsiya – Soviet/Russian equivalent 2S19 Msta – Soviet/Russian equivalent 2S35 Koalitsiya-SV – Russian equivalent AHS Krab - Polish equivalent PzH 2000 – German equivalent GCT 155mm – French equivalent AS-90 – British equivalent K9 Thunder – South Korean howitzer developed by Samsung Techwin 152mm SpGH DANA - Army of the Slovak Republic Type 75/Type 99 – Japanese equivalent Palmaria - Italian equivalent built for export PLZ-05 – Chinese equivalent Sholef - Israeli equivalent (prototype) Bandkanon 1 – armored self-propelled L/50 155 mm gun for the Swedish Army from 1967 to 2003 See also List of artillery List of land vehicles of the U.S. Armed Forces M107 standard 155mm High Explosive (HE) projectile M549 HE Rocket Assisted (HERA) projectile M864 Dual-Purpose Improved Conventional Munition (DPICM) M795, a more lethal, longer range version of the M107 HE projectile Notes External links Gary's Combat Vehicle Reference Guide M109A7 155mm self-propelled tracked howitzer artillery vehicle (United States) on armyrecognition.com Fas.org Globalsecurity.org Israeli-weapons.com M109 Technical Manuals M109 Technical Library & M109 Spare Parts 155 mm artillery Self-propelled howitzers of the United States Tracked self-propelled howitzers BAE Systems land vehicles Cold War artillery of the United States Military vehicles introduced in the 1960s