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Questions & Answers
Will this compensator fit flush against the slide when used with the Sig Sauer brand threaded barrel? Expert Answer

This Herrington Arms HC320 Pistol Compensator is designed to work with any 1/2x28 threaded P320 barrel (not compatible with M13.5x1 LH barrels). It is specifically designed to match the slide width and contours of the P320. It will mount flush to the slide, but not flush enough to be contacting the slide as that would cause malfunctions.

by Ethan, Gear Expert, March 15, 2024
Customer Reviews
Helpful Positive Review
night and day difference by Joe dirt, Verified Owner, October 10, 2023
So i bought this for my p320 rxp I completely redid the gun i found it to be a little snappier than my glocks so i put this gun aside for awhile, i bought this an x5legion frame and a threaded barrel for a flush-ish mounted comp. I shot it over the w...
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3/3 found this helpful
Helpful Positive Review
Nice add on by Sig sour patch kid, Verified Owner, September 20, 2024
There's a learning curve with using this as I'm experiencing stovepiping. I'll have to try 124 grains instead of 115 grains. But when it does shoot right, I feel at like it helps my recoil and return to fire a lot more accurately. The FDE shade was o...
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1/1 found this helpful
Helpful Positive Review
good qualtiy comp for flux defense brace by Sung, Verified Owner, September 15, 2023
Good quality comps that fits flux defense brace pretty well. No issues with 115 grain and 147 grain ammo with OEM p320 springs. Didn’t have any malfunction or jam after shooting roughly 200 rounds of both. I was impress because all the other comp I h...
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1/1 found this helpful
Helpful Negative Review
FDE does not match FDE on M17. by M17 owner, Verified Owner, April 24, 2025
Unfortunately aesthetics failed here but have not gotten to the range yet to test performance yet. It would be great if it matched the M17 but the color is way off.
2/2 found this helpful
Most Recent Reviews
Hc320 is a game changer! by John Tapio, Verified Owner, March 27, 2026
The Harrington Arms HC320 is a game-changer for the Sig P320 platform. It significantly reduces muzzle flip and felt recoil, allowing for much faster, more accurate follow-up shots. The machining is top-tier, and the profile blends seamlessly with th...
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Most Recent Reviews
Great Comp with easy mounting. by GreyKnight, Verified Owner, January 23, 2026
I have several Herrington Arms comps for both Glocks and Sigs and think they are some of the best on the market for general / duty use. These provide a factory / OEM look, simple mounting and noticeable reduction muzzle flip. They will not compete w...
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Read All 22 Reviews
Color:
Black
Caliber:
9mm Luger
Finish:
Anodized
Threads per Inch:
1/2x28
Gun Model:
SIG Sauer P320, SIG Sauer P320 Compact, SIG Sauer P320 X-Carry, SIG Sauer P320 X-Compact
Length:
1.23 in
Condition:
New

Code: 5NG-BCM-RTYH-HC3201-2-BL

MPN: HC3201/2-BL

UPC: 860005892945

List: $103.99Save $8.00
$95.99

Product Info for Herrington Arms SIG Sauer P320 HC320 Pistol Compensator

The Herrington Arms HC320 Compensator is designed to work flawlessly with Sig Sauer P320 series. It does an amazing job at reducing vertical climb of muzzle as well as reducing the horizontal recoil arc. It is made of high-quality 7075 aluminum and coated with either FDE Cerakote or Black Anodized finish to compliment your specific Sig P320 configuration.image

Works great with stock springs so no need to change anything, fits on 1/2-28 threaded barrel X-Compact, Compact, X-Carry and full-size P320s.

Specifications for Herrington Arms SIG Sauer P320 HC320 Pistol Compensator:

Manufacturer: Herrington Arms
Color: Black
Caliber: 9mm Luger
Finish: Anodized
Fabric/Material: 7075 Aluminum
Threads per Inch: 1/2x28
Gun Make: SIG Sauer
Gun Model: SIG Sauer P320 X-Carry, SIG Sauer P320 X-Compact, SIG Sauer P320 Compact, SIG Sauer P320
Length: 1.23 in
Condition: New
Gun Type: Pistol

Features of Herrington Arms SIG Sauer P320 HC320 Pistol Compensator

  • Engineered To Greatly Reduce Vertical And Horizontal Recoil Of Your Gun
  • Makes Target Re-Acquisition Easier With Follow-Up Shots
  • Highly Durable 7075 Aluminum For Extreme Longevity And Lightness
  • Easy To Install, No Gunsmith Required!
  • Uses Steel Replacement 8-32 Set Screws
  • No Questions Asked, Lifetime Warranty!
  • New Slides Or Barrels May Require A 300 Round Break In!
  • Not Compatible With Bar-Sto, Kkm, Or Efk Barrels!
  • Requires A Threaded Barrel

Package Contents:

  • Herrington Arms SIG Sauer P320 HC320 Pistol Compensator
  • 5/64 Allen key
  • Steel replacement 8-32 set screw

Herrington Arms SIG Sauer P320 HC320 Pistol Compensator Orderable Models

List of Orderable Models

  • Herrington Arms SIG Sauer P320 HC320 Pistol Compensator, Black, HC3201/2-BL , MPN: HC3201/2-BL , UPC: 860005892945 , Code: 5NG-BCM-RTYH-HC3201-2-BL

Herrington Arms SIG Sauer P320 HC320 Pistol Compensator Unavailable & Discontinued Models

List of Unorderable Models

  • USED, Herrington Arms SIG Sauer P320 HC320 Pistol Compensator, Black, HC3201/2-BL , MPN: HC3201/2-BL-EDEMO , Code: 5NG-BCM-RTYH-HC3201-2-BL-EDEMO-IN-C
  • USED, Herrington Arms SIG Sauer P320 HC320 Pistol Compensator, Black, HC3201/2-BL , MPN: HC3201/2-BL-EDEMO , Code: 5NG-BCM-RTYH-HC3201-2-BL-EDEMO-US-C
  • USED, Herrington Arms SIG Sauer P320 HC320 Pistol Compensator, FDE, HC3201/2-FDE , MPN: HC3201/2-FDE-EDEMO , Code: 5NG-BCM-RTYH-HC3201-2-FDE-EDEMO-IN-C
  • USED, Herrington Arms SIG Sauer P320 HC320 Pistol Compensator, Black, HC3201/2-BL , MPN: HC3201/2-BL-EDEMO , Code: 5NG-BCM-RTYH-HC3201-2-BL-EDEMO-RE-B
  • USED, Herrington Arms HC320 Pistol Compensator For Sig P320, Black, HC3201/2-BL , MPN: HC3201/2-BL-EDEMO , Code: 5NG-BCM-RTYH-HC3201-2-BL-EDEMO-SC-C
  • USED Herrington Arms HC320 Pistol Compensator For Sig P320, Black, HC3201/2-BL, EDEMO1, Used, Condition Like New , MPN: HC3201/2-BL-EDEMO1 , Code: 5NG-BCM-RTYH-HC3201-2-BL-EDEMO1
  • USED, Herrington Arms SIG Sauer P320 HC320 Pistol Compensator, Black, HC3201/2-BL , MPN: HC3201/2-BL-EDEMO , Code: 5NG-BCM-RTYH-HC3201-2-BL-EDEMO-IN-B
  • USED Herrington Arms HC320 Pistol Compensator For Sig P320, FDE, HC3201/2-FDE, EDEMO1, Condition Like New, Wrong Product , MPN: HC3201/2-FDE-EDEMO1 , Code: 5NG-BCM-RTYH-HC3201-2-FDE-EDEMO-WP-A
  • USED Herrington Arms HC320 Pistol Compensator For Sig P320, FDE, HC3201/2-FDE, EDEMO2, Used, Condition Fair , MPN: HC3201/2-FDE-EDEMO2 , Code: 5NG-BCM-RTYH-HC3201-2-FDE-EDEMO2
  • Herrington Arms SIG Sauer P320 HC320 Pistol Compensator, FDE, HC3201/2-FDE , MPN: HC3201/2-FDE , UPC: 850043707103 , Code: 5NG-BCM-RTYH-HC3201-2-FDE
  • USED, Herrington Arms HC320 Pistol Compensator For Sig P320, FDE, HC3201/2-FDE , MPN: HC3201/2-FDE-EDEMO , Code: 5NG-BCM-RTYH-HC3201-2-FDE-EDEMO-SC-B
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