TC 3-22.12 — M26 Modular Accessory Shotgun System

TC 3-22.12 governs operation, maintenance, marksmanship training, and combat techniques for the M26 Modular Accessory Shotgun System.

Search TC 3-22.12

  • Publication number: TC 3-22.12
  • Title: M26 MODULAR ACCESSORY SHOTGUN SYSTEM
  • Date: 11/12/2014
  • Proponent: T2COM
  • Status: ACTIVE

View TC 3-22.12 on armypubs.army.mil


TC 3-22.12 covers system configurations, ammunition, clearing, assembly, cleaning, firing, malfunctions, and destruction. It also requires training in marksmanship, nonlethal engagements, ballistic door breaching, and range safety.

Topics covered

  • M26 Modular Accessory Shotgun System
  • Ammunition
  • Clearing procedures
  • System configurations
  • Marksmanship training
  • Ballistic shotgun breaching
  • Nonlethal engagements
  • Range safety and risk management

Questions and answers

How many rounds can the M26 MASS hold?

The MASS can hold six rounds: five rounds in the magazine and one round in the chamber. (paragraph 2-13)

Is keeping a round in the chamber recommended for the M26 MASS?

For safety reasons, keeping a round in the chamber is not recommended. (paragraph 2-13)

What protection is required during M26 MASS training?

During training, eye protection is required to protect the firer from projectile bounce-back. (paragraph 2-13)

What training is required before placing the MASS in the stand-alone configuration?

System operators must be trained in M26 MASS disassembly and assembly before placing the MASS in the stand-alone configuration. (paragraph 3-1)

What is the aimpoint for lethal antipersonnel ammunition?

The aimpoint for all lethal antipersonnel ammunition is the target's center of mass. (paragraph 4-27)

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