I Have This Old Gun: U.S. M16A2 Rifle

Published on August 9, 2018
Duration: 6:19

This expert guide from NRA Publications details the U.S. M16A2 rifle, highlighting its development, key improvements over previous models, and specific features. Mark A. Keefe IV and other firearm historians discuss its barrel modifications for M203 compatibility, the 'birdcage' flash hider, forward assist, brass deflector, improved rear sight, and the shift to 3-round burst fire. The entry emphasizes the rifle's optimization for the M855 cartridge and its historical significance.

Quick Summary

The M16A2 rifle incorporates significant improvements over earlier M16s, including a barrel contoured for the M203 grenade launcher, a dust-reducing 'birdcage' flash hider, a brass deflector for left-handed shooters, and a 3-round burst fire mode for better ammunition control.

Chapters

  1. 00:00Introduction to the M16A2
  2. 00:15Development and Marine Corps Influence
  3. 00:43Design Improvements
  4. 01:44Barrel and M203 Compatibility
  5. 02:42Flash Hider Evolution
  6. 03:35Forward Assist and Brass Deflector
  7. 04:08Rear Sight and Marksmanship
  8. 04:34Civilian Versions and Ammunition
  9. 05:11Fire Control Settings

Frequently Asked Questions

What are the key improvements of the M16A2 over earlier M16 models?

The M16A2 features a heavier barrel for M203 compatibility, an improved 'birdcage' flash hider, a forward assist, a brass deflector for left-handed shooters, an adjustable drum rear sight, and a 3-round burst fire mode instead of full-auto.

How does the M16A2's barrel differ from previous M16 versions?

The M16A2's barrel was specifically contoured to allow for the mounting of the M203 grenade launcher. It also features a heavier profile designed to enhance accuracy and withstand sustained firing.

What ammunition is the M16A2 optimized for?

The M16A2 rifle design was optimized for the SS109/M855 'green tip' 5.56mm cartridge, which offered improved ballistics and penetration compared to earlier rounds.

What is the purpose of the M16A2's brass deflector?

The built-in brass deflector on the M16A2 redirects ejected cartridges away from a left-handed shooter's face, significantly improving comfort and usability for all personnel.

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