TC 3-20.31-120 — Gunnery: Heavy Tank
TC 3-20.31-120 governs integrated weapons training for U.S. Army heavy tanks through six training tables and live-fire qualification.
- Publication number: TC 3-20.31-120
- Title: GUNNERY: HEAVY TANK
- Date: 07/31/2025
- Proponent: T2COM
- Status: ACTIVE
View TC 3-20.31-120 on armypubs.army.mil
The publication covers Gunnery Skills Test, virtual and live situational training exercises, basic training, practice, and qualification. It includes requirements for simulations, live-fire events, screening and zeroing, machine gun engagements, records, and crew proficiency.
Topics covered
- Heavy tank training strategy
- Gunnery Skills Test
- Situational training exercises
- Live-fire qualification
- Screening and zeroing
- Main gun confirmation
- Basic machine gun engagements
- Complex engagements
Questions and answers
Is Table II required before live-fire training?
Table II is a prerequisite for any live-fire event, including zero procedures, sub-caliber or in-bore training, or any live-fire maintenance procedure. (paragraph 2-1)
What does Table III include?
Table III, STX, is a live environment, hands on training event using TADSS, and includes the use of blank ammunition, pyrotechnics, and BESs. (paragraph 3-9)
When must units complete Table III?
Units will complete Table III between T-6 and T-week to support the training events. (paragraph 3-11)
What does Table IV include?
Table IV includes the live fire accuracy screening test (LFAST) and machine gun zero procedures to ensure the accuracy of the tank before training initiates. (paragraph 4-7)
What is the Army-standard screening distance for Abrams-series tanks?
The Army-standard screening distance to the ST-5 panel for all Abrams-series tanks has changed from 1,500 meters to 1,600 meters, plus or minus 20 meters. (paragraph 4-67)