My 11.5 SHTF AR Build

Published on June 16, 2024
Duration: 9:53

This video details the construction of a 11.5-inch AR-15 rifle designed for SHTF (Shit Hits The Fan) scenarios. The build emphasizes reliability and performance through carefully selected components, including a Criterion barrel, Modern Armory BCG, Sons of Liberty Gunworks M89 rail, and a Griffin Armament Mark 2 lower receiver. The presenter highlights the benefits of the 11.5-inch barrel length for increased dwell time and reliability, especially when suppressed.

Quick Summary

An 11.5-inch AR-15 barrel is recommended for SHTF builds due to its balance of maneuverability and performance, offering 40% more dwell time than a 10.5-inch barrel for improved velocity and reliability, especially with suppressors.

Chapters

  1. 00:00Introduction to the SHTF AR Build
  2. 00:22Suppressor and Muzzle Device Setup
  3. 00:38Criterion Barrel and Gas System
  4. 00:54Sons of Liberty Gunworks M89 Rail
  5. 01:10BCM Upper and Modern Armory BCG
  6. 01:29Griffin Armament Mark 2 Lower Receiver
  7. 01:43Lower Parts Kit and Trigger
  8. 01:48Grip and Buffer Tube Assembly
  9. 02:02Charging Handle and Safety Selector
  10. 02:13Optic Setup: Unity Riser and Promethean LP1
  11. 02:23Goon Beam Long V2 Light
  12. 02:31Component Philosophy: Favorite Parts
  13. 03:01Rationale for an 11.5-inch Barrel
  14. 04:06Deep Dive: Criterion Barrels
  15. 05:20Deep Dive: Modern Armory BCG
  16. 05:47Deep Dive: Rail and Lower Receiver
  17. 06:35Deep Dive: Griffin Armament Mark 2 Lower
  18. 07:08Vltor A5 Buffer System Explained
  19. 07:33Other Component Preferences
  20. 07:40Goon Beam Long V2 and Promethean LP1
  21. 08:01BCM Upper Receiver Choice
  22. 08:06Rearden Muzzle Brakes and Cherry Bomb
  23. 08:25Potential Future Modifications
  24. 08:42Gas System Tuning Options
  25. 09:04Conclusion: The 11.5" SHTF Build

Frequently Asked Questions

What are the advantages of an 11.5-inch AR-15 barrel for a SHTF build?

An 11.5-inch barrel offers a balance of maneuverability and performance. It provides approximately 40% more dwell time than a 10.5-inch barrel, leading to increased velocity and improved reliability, especially when paired with a suppressor.

Which bolt carrier group is recommended for a high-reliability AR-15 build?

The Modern Armory NP3 Carpenter 158 bolt carrier group is recommended for its build quality and precise machining. It features OC Fasteners and Sprinco springs for enhanced durability and performance.

What makes the Sons of Liberty Gunworks M89 rail a good choice for a tactical AR build?

The M89 rail utilizes a drive-lock system with three wedges that clamp onto a proprietary barrel nut, ensuring extreme rigidity. Its larger inner diameter also provides more space around the gas block and takes longer to heat up.

Why is the Vltor A5 buffer system preferred over standard AR-15 buffer systems?

The Vltor A5 buffer system is noted for its proven reliability in the field, outperforming standard M16A2, M4, and H6 stock systems. It offers enhanced reliability and performance characteristics for a smoother shooting experience.

More Gunsmithing & DIY Videos You Might Like

More from Cerebral Firearms

View all →