The M16A5, The Rifle that Never Was

Published on November 22, 2025
Duration: 16:58

This guide details the installation of buffer systems for the M16A5 concept, focusing on the VLTOR A5 and H6 buffers. It explains the necessity of these specialized buffers when pairing rifle-length gas systems with telescopic stocks to prevent carrier bounce and improve reliability. The process involves selecting compatible components and ensuring proper installation for enhanced firearm performance.

Quick Summary

The M16A5 concept aimed to improve rifle ergonomics by integrating telescopic stocks with 20-inch barrels. This required specialized buffer systems, such as the VLTOR A5 or H6 buffers, to prevent 'carrier bounce' caused by the combination of a rifle-length gas system and a collapsible stock, thereby enhancing reliability.

Chapters

  1. 00:00Introduction to M16A5 Concept
  2. 01:28Canadian Influence and Ergonomics
  3. 03:04Buffer System Challenges
  4. 07:23H6 and VLTOR A5 Systems Explained
  5. 11:20Authorization and Combat Use
  6. 13:34VLTOR VIS and Final Developments

Frequently Asked Questions

What was the M16A5 concept?

The M16A5 was a Marine Corps concept around 2013 aiming to combine the accuracy of a 20-inch barrel with the ergonomics of a telescopic stock, addressing issues with fixed stocks and modern body armor. It influenced buffer system development.

Why are specialized buffers like the VLTOR A5 needed for rifle-length gas systems with telescopic stocks?

Standard carbine buffers are insufficient, leading to 'carrier bounce' when a rifle-length gas system is paired with a telescopic stock. Specialized buffers like the VLTOR A5 or H6 use weights and specific designs to manage the bolt carrier's movement and ensure reliability.

Was the M16A5 ever officially adopted?

No, the M16A5 was never officially type-classified. However, the 'Hybrid Buttstock' was authorized for field use, allowing telescopic stocks on full-length rifles, and these configurations saw service in combat zones.

What is 'carrier bounce' in an AR-15 platform?

Carrier bounce occurs when the bolt carrier group rebounds forward after its rearward travel with enough force to potentially cause malfunctions. Specialized buffers like the VLTOR A5 are designed to dampen this rebound.

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