This document describes a 5.56mm lightweight, air-cooled, gas operated, magazine-fed carbine designed for either three shot automatic burst or semi-automatic fire.
This document is a military specification approved by the US Army Armament Munitions and Chemical Command. It covers the requirements, examinations, and tests for a 5.56mm lightweight, air-cooled, gas-operated, magazine-fed carbine designed for either three-shot automatic burst or semi-automatic fire.
The specification details materials and construction requirements based on Drawing 9390000 and applicable provisions of MIL-W-13855. It outlines specific design criteria for the upper and lower receiver groups, including the hammer, automatic sear, fire control selector (safe, semi-automatic, burst), bolt catch, magazine system, trigger mechanism, and buttstock assembly.
| Operation Type | Air-cooled, gas operated, magazine-fed |
|---|---|
| Fire Modes | Three shot automatic burst or semi-automatic fire |
The US Army Armament Munitions and Chemical Command.
The carbine is designed for either three-shot automatic burst or semi-automatic fire.