Special Ops Tactical 556 NATO 5.9″ Barrel - Gorilla Arms LLC

Special Ops Tactical 556 NATO 5.9″ Barrel


These Barrels are Truly Amazing!

Special Ops Tactical’s 5″ (PATENT PENDING) “SOT Siphon AGP”  “Rearward” Angled Gas Port, (PISTOL Length) Nitride Premium Barrels are Precision made using 4150 Chromoly Vanadium and Feature an +11 Degree Target Crown and Superior Nitride Finish with Nickel Boron M4 Extension for Supreme Reliability. (Gas Block and Tube sold separately)


  • (PATENT PENDING) “SOT Siphon AGP”  “Rearward” Angled Gas Port
  • Nitride Premium 5.9″ Pistol Length Barrel
  • Reduced Recoil over any other barrel in it’s class
  • Improved Gas Flow
  • 5.56 NATO Chamber
  • +11 Degree Target Crown
  • MILSPEC 4150 CrMoVa
  • .936 Gas Seat*
  • Nickel Boron M4 Barrel Extension
  • Premium Nitride Treatment Inside and Out
  • PISTOL Length Gas System
  • MILSPEC 1:7 Twist Rate
  • Muzzle 1/2×28 Thread Pitch
  • Barrel Weight (1LB 1.8oz)
  • Custom SOT HEAVY Profile

**((Gas Block and Gas Tube that are pictured are not included))**

Here is a link to the correct gas block for our 5.9 Siphon AGP Barrel.

**(These barrels are designed to work with ((Milspec)) components and may not be compatible with some after market (PDW STOCKS) as some require more than normal gas pressure to cycle.  (For Utmost reliability and smoothness we recommend using a Milspec Buffer System with these barrels).

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