9.2" Siphon AGP Barrel

9.2″ Nitride Premium+ (Siphon AGP) w/ Nickel Boron (Carbine Length Barrel)

5.00 out of 5
(2 customer reviews)


These Barrels are Truly Amazing!

Our 9.2″ (PATENTED US PAT NO. 10,274,273) “SOT Siphon AGP” “Rearward” Angled Gas Port, (CARBINE 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)

In stock


These Barrels are Truly Amazing!

Our Rearward Angled Gas Port accompanied with utilizing a longer gas tube, as well as a smoother gas flow with one less 90 degree turn in gas flow, “all not previously possible with any other barrel”, equates to the smoothest, lowest recoiling barrels on the market that no other barrel is able to achieve. Special Ops Tactical (PATENTED US PAT NO. 10,274,273)


  • “SOT Siphon AGP”  “Rearward” Angled Gas Port (PATENTED US PAT NO. 10,274,273)
  • Nitride Premium 9.2″ Carbine 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
  • .750 Gas Seat
  • Nickle Boron M4 Barrel Extension
  • Premium Nitride Treatment Inside and Out
  • CARBINE Length Gas System
  • MILSPEC 1:7 Twist Rate
  • Muzzle 1/2×28 Thread Pitch
  • Barrel Weight (1LB 0.6oz)
  • Custom SOT Medium Profile

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

**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.

2 reviews for 9.2″ Nitride Premium+ (Siphon AGP) w/ Nickel Boron (Carbine Length Barrel)

  1. 5 out of 5

    Darius Hall

    I love shooting this pistol even more than my 10.5”. It’s smooth as silk and the recoil impulse is predictable. I plan on buying a 5.9” version and building a suppressed PDW next!!!!

  2. 5 out of 5

    Jose (verified owner)

    I’ve had this barrel for about 3 years by now, I think I have a little over 3,000 Rds through it in classes and self training, and it’s been nothing but a dream to run. You can’t find any reviews but it’s worth every penny, I wish this kind of has porting was standardized cuz it’s such a simple yet effective improvement.
    It’s smooth enough to track the red dot during recoil and I’ve even ran steel case with no issue.

Add a review