Daniel Defense GL/SSC 5.56mm 12.5" RISII FDE Upper Receiver

Some Uppers aren't just rare — they're legendary. The GL/SSC is both. The original was so unobtainable that only 25 ever reached civilian hands — and even then, builders went to extraordinary lengths just to get close.

 

Now, for the first time, it's available to the general public. The GL/SSC is built around a 12.5" Cold Hammer Forged Government profile barrel on a carbine-length gas system, paired with the iconic free-float RIS II rail and integrated hanger system for full M203 and suppressor compatibility. No workarounds. No compromises. The real thing.

NFA DISCLAIMER

Once this part is assembled into a complete firearm, it becomes a regulated item by the National Firearms Act (NFA). Please check with your local and state municipalities for any further regulatory requirements. It is the buyer's responsibility to make sure they comply with all NFA rules and applicable laws.

Features

• 12.5 chrome-lined, heavy-phosphate-coated government profile barrel.
• Free-floating GL/SSC RIS II. Integrates all M203 grenade launcher mounting components directly into the rail without additional parts or special tools. Provides real estate for accessories without affecting barrel harmonics. 
• Chrome Moly Vanadium Steel, Cold Hammer Forged, 1:7 Twist, Government Profile, Chrome Lined, Mil-Spec Heavy Phosphate Coated, 12.5" Carbine Gas System.
• Compatible with Suppressors and M203 mounting accessories via
• free-float hangar system.
• Made in the USA.

Specifications

• Caliber: 5.56mm NATO
• Twist Rate: 1:7
• Muzzle Device: DD® A2 Flash Hider
• Rail System: Free-Floating GL/SSC RIS II
• Gas System: Carbine
• Barrel Length: 12.5"
• Product Weight: 3.9 lbs
• Manufacturer: Daniel Defense