Unit direct support and general support maintenance repair parts and special tools list (including depot maintenance repair parts and special tools) for cab, armament, sighting and fire control, elevating and traversing systems, and associated components howitzer, medium, self-propelled, 155MM M109A2 (NSN 2350-01-031-0586) (EIC:3EZ), M109A3 (NSN 2350-01-031-8851) (EIC:3E2), M109A4 (NSN 2350-01-277-5770) (EIC:3E8), M109A5 (NSN 2350-01-281-1719) (EIC:3E7)