Goody bye M16! Military Adopts the M5 rifle and 6.8x51. Are they crazy?

Published on May 10, 2022
Duration: 39:06

The US military's adoption of the Sig Sauer M5 (M7) rifle and 6.8x51mm cartridge signifies a major shift from the M16/M4 platform. While the new system offers increased power, concerns remain regarding extreme operating pressures (80,000 PSI), potential for reduced barrel life, significant recoil in full-auto, and logistical challenges like breaking NATO standardization and increased ammunition weight/volume. The accompanying Vortex XM157 smart optic adds advanced targeting capabilities but also considerable cost.

Quick Summary

The US military is transitioning from the M16 to the Sig Sauer M5 (M7) rifle and 6.8x51mm (.277 Fury) cartridge. This move aims to defeat advanced body armor but raises concerns about high operating pressures, recoil, barrel life, and logistical challenges like breaking NATO standardization.

Chapters

  1. 00:00Introduction to NGSW Adoption
  2. 01:50Logistical and Financial Impact
  3. 03:30Recoil and Controllability Concerns
  4. 05:42Platform vs. Caliber Debate
  5. 09:34Technical Challenges: Pressure and Barrel Life
  6. 14:28The Vortex XM157 Smart Optic
  7. 16:49Rationale: Defeating Body Armor
  8. 18:21Squad Dynamics and NATO Standardization
  9. 20:30Civilian Market Adoption

Frequently Asked Questions

What is the US military replacing the M16 with?

The US military is replacing the M16 and M4 rifles with the Sig Sauer M5 (now designated M7) rifle and the XM250 light machine gun, chambered in the new 6.8x51mm (.277 Fury) cartridge.

What are the main concerns with the new 6.8x51mm cartridge and M5 rifle?

Key concerns include the cartridge's extremely high operating pressure (80,000 PSI) potentially reducing barrel life, significant recoil in full-auto fire, and the logistical challenges of breaking NATO standardization and increased ammunition weight.

What is the purpose of the Vortex XM157 optic included with the new rifle system?

The Vortex XM157 is a 1-8x smart optic featuring an etched reticle, ballistic calculator, and communication capabilities to share target data across a squad, enhancing situational awareness and accuracy.

How does the 6.8x51mm cartridge compare to the older 5.56mm?

The 6.8x51mm offers significantly more power and penetration, intended to defeat advanced body armor. However, it comes with higher recoil, lower ammunition capacity per magazine (20 vs 30 rounds), and greater logistical complexity than the established 5.56mm.

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