Daniel Defense GL/SSC: The SOCOM “Unicorn” Rifle Returns

Published on May 27, 2026
Duration: 5:12

Daniel Defense introduces the GLSSC, a 25th-anniversary offering inspired by a rare SOCOM rifle. This 12.5-inch barreled AR-15 platform is designed to be compatible with both underslung grenade launchers and sound suppressors, offering a balance of maneuverability and ballistic performance. It features Daniel Defense's proprietary hammer-forged barrel, RIZ2 rail, and enhanced trigger, available in SBR and pistol variants.

Quick Summary

The Daniel Defense GLSSC is a 25th-anniversary rifle inspired by a rare SOCOM configuration. It features a 12.5-inch barrel and is designed to be compatible with both underslung grenade launchers and sound suppressors, offering a balance of maneuverability and ballistic performance.

Chapters

  1. 00:00Introduction of the GLSSC
  2. 00:16SOCOM SOPMOD Block II Program History
  3. 00:48The Need for the GLSSC Rail
  4. 01:13Limited Production and Commercial Overrun
  5. 01:27GLSSC Launch for 25th Anniversary
  6. 01:5112.5-inch Barrel Features
  7. 02:33RIZ2 GLSSC Length Rail
  8. 02:49Standard M4 Accoutrements
  9. 03:07SBR and Pistol Variants
  10. 03:40Benefits of a 12.5-inch Barrel
  11. 04:33The 'Goldilocks' Balance
  12. 04:51Shipping and Future Offerings

Frequently Asked Questions

What is the Daniel Defense GLSSC rifle?

The Daniel Defense GLSSC is a 25th-anniversary rifle inspired by a rare SOCOM configuration. It features a 12.5-inch barrel and is designed to be compatible with both underslung grenade launchers and sound suppressors, offering a balance of maneuverability and ballistic performance.

What does GLSSC stand for?

GLSSC stands for Grenade Launcher Sound Suppressor Compatible. This designation highlights the rifle's ability to effectively integrate both an underslung grenade launcher and a sound suppressor, a unique capability developed for specific mission requirements.

Why is the 12.5-inch barrel significant on the GLSSC?

The 12.5-inch barrel on the GLSSC provides a sweet spot for ballistic efficiency on the AR-15 platform. It offers improved muzzle velocities for medium to long-range engagements compared to shorter barrels, while maintaining a compact and maneuverable overall package.

What historical context led to the development of the GLSSC?

The GLSSC was born from SOCOM's SOPMOD Block II program, which sought specialized attachments for the M4A1. A need arose for a rifle that could accommodate both grenade launchers and suppressors, a niche not filled by existing M4A1 or Mark 18 variants.

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