Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Enjoy free shipping during the holidays! Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC and to all U.S. Military APO/FPO/DPO addresses.

Enjoy Our Extended FREE RETURNS

We want to ensure that making a return is as easy as possible! With our Hassle-Free, Extended Holiday Returns, eligible orders placed from November 12, 2025 on will benefit from an extended return deadline (January 13, 2026 or 30 days after receipt of your order - whichever is later). We'll even cover the cost of return shipping. Learn more about our Return Policy.

Shopping Cart
Special offer available for this product. Click here to see!
Government Export Restriction Government Export Restriction
Government Restriction Government Restriction
Questions & Answers
I have a sig p320 4.3 threaded barrel. Can this be screwed in tight with the lock system or will I need to use locktite to secure it? Expert Answer

The Killer Innovations Sig P320 Compensator should be able to fit and function without the use of loctite. However, blue loctice is included is included with this comp and is recommended for use when installing the comp. You can find the installation instructions linked below:
https://killer-innovations.com/wp-content/uploads/2021/08/KI-SIG-P320-COMP-9MM-INSTRUCTIONS-8-19-21.pdf

by Ethan, Gear Expert, July 25, 2022
Will it Sig P320 X-Five & X5 Legion BULL Barrel - Threaded 1/2x28 with 5.7” barrel length? Manufacturer Answer

Hello! Unfortunately no, these are not compatible with the Bull Barrel. - Thank you

by Killer Innovations, Manufacturer, June 8, 2022
Customer Reviews
Helpful Positive Review
What's the Big Deal? by Jake De Muss, Verified Owner, May 11, 2023
You buy the Killer Innovations Sig P320 Compensator, take it o the range to test, get a stove pipe/FTF, and then you buy the Armory Craft Recoil Tuning Kit. I ended up using the 11 lbs. recoil spring with this comp. What's the Big Deal?
2/3 found this helpful
Helpful Positive Review
Looks great with my p320 has great fixed screws and does make sure to seat properly to get that great compensator look on the slide, found no issues with the item and I highly recommend if your trying to make your build look great.
1/2 found this helpful
Helpful Positive Review
Not compatible with the Faxon Firearms Sig Sauer P320 Full Size Barrel. Fits the profile of the slide perfectly. Killer Innovations doesn't make a barrel for the full-size P320 so I tried a different brand and it leaves a huge gap making compensator ...
Read More...
4/4 found this helpful
Helpful Negative Review
SUCKS, will not cycle by Ed Flo, January 16, 2021
I have this specific P320 comp and it will NOT cycle the slide. I have tried time after time, round after round, heavier to lighter loads and NOTHING. I set up a slow motion camera to see what was going on and I can tell that the slide cycles ALMOST ...
Read More...
4/19 found this helpful
Most Recent Reviews
Issues and questions by Joe, August 4, 2022
Fit just fine on p320 it was on. But shooting is something else you have to manually pull the slide back to have another round enter the chamber to shoot again. So I tried with one of my p320C's fits doesn't work and no instructions on how to adjust ...
Read More...
1/8 found this helpful
Most Recent Reviews
Won’t cycle by Roberto, March 25, 2022
It looks great, but I can’t get it to cycle. Tried lots of ammo types. Watched a video about their Glock version and they say lower the spring weight and use flat springs…. I may try to lower the weight, but I’ve not been able to find a flat sprin...
Read More...
1/4 found this helpful
Read All 9 Reviews
In Stock
3 Models Available
Color
All
Search
Click to select this item for your bundle offer!

Buy Together and Save

As low as $380.49
You Save Up to $21.50
Receive $7.61 OP Bucks

made-in-usa-flag Made in USA

Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.

Product Info for Killer Innovations Sig P320 Compensator

Killer Innovations Velocity Compensator is braking all the rules! This compensator significantly reduces recoil and muzzle climb and attaches in an innovative new way that is completely different than any other compensator on the market. This revolutionary attachment system has a few advantages over the traditional methods.image

First: It can be installed and removed without using tools when using our Velocity Mod 2 barrel. Cleaning your gun just got a whole lot easier! When used with other brand barrels, tools will be required to add or remove the comp, but accuracy will be maintained.

Second: The compensator pushes all the way back to the thread shoulder when installed. This provides a superior bore alignment to other comps that are timed short of the shoulder, then set screwed or clamped to the threads. This bore alignment accuracy ensures the bullet is passing directly down the center of the comp with equal air gap around the bullet. This equal air gap eliminates the air pushing to one side and wobbling your bullet. Accuracy down range is the ultimate goal!

Every professional shooter we let shoot this comp during testing said this was the flattest shooting comp they had ever shot. We agree! We adjusted the ports and tuned this comp for months before we were satisfied that we had made it shoot as flat as possible and still reliably cycle the slide.

If you want a compensator that is extremely accurate and installs easier than any other comp on the market, look no further, weve got you covered!

As always, made 100% in the USA.

Specifications for Killer Innovations Sig P320 Compensator:

Manufacturer: Killer Innovations
Fabric/Material: 7075 T6 Aluminum
Threads per Inch: 1/2x28
Gun Make: SIG Sauer
Gun Model: SIG Sauer P320
Weight: 1.6 oz
Condition: New
Country of Origin: USA

Features of Killer Innovations Sig P320 Compensator

  • All comps now come with the Reduced Port Locking Ring (read more about it here)
  • Compatible with: P320C slides using a 3.9? Barrel
  • For use with 9MM only

Package Contents:

  • Killer Innovations Sig P320 Compensator
  • Compensator Body w/Button installed
  • 1 Locking Ring
  • 1 Reduced Port Locking Ring
  • Qty 2 ea - set screws: Half Dog Pointed and Cup Point
  • Blue Thread Locker
  • Installation Instructions

Killer Innovations Sig P320 Compensator Orderable Models

List of Orderable Models

  • Killer Innovations Sig P320 Compensator, Black, SIGBRK319BLK , MPN: SIGBRK319BLK , UPC: 810104450027 , Code: 3P4-BCM-KILI1-SIGBRK319BLK
  • Killer Innovations Sig P320 Compensator, Gold, SIGBRK319GLD , MPN: SIGBRK319GLD , UPC: 810104450041 , Code: 3P4-BCM-KILI1-SIGBRK319GLD
  • Killer Innovations Sig P320 Compensator, Gray, SIGBRK319GRY , MPN: SIGBRK319GRY , UPC: 810104450034 , Code: 3P4-BCM-KILI1-SIGBRK319GRY

Killer Innovations Sig P320 Compensator Unavailable & Discontinued Models

List of Unorderable Models

  • USED, Killer Innovations Sig P320 Compensator, Black, SIGBRK319BLK , MPN: SIGBRK319BLK-EDEMO , Code: 3P4-BCM-KILI1-SIGBRK319BLK-EDEMO-SC-C
  • USED Killer Innovations Sig P320 Compensator, Gold, SIGBRK319GLD, EDEMO1, Used, Condition Fair, Scratches , MPN: SIGBRK319GLD-EDEMO1 , Code: 3P4-BCM-KILI1-SIGBRK319GLD-EDEMO-SC-D
  • USED Killer Innovations Sig P320 Compensator, Gold, SIGBRK319GLD, EDEMO2, Used, Condition Fair , MPN: SIGBRK319GLD-EDEMO2 , Code: 3P4-BCM-KILI1-SIGBRK319GLD-EDEMO2
  • USED Killer Innovations Sig P320 Compensator, Black, SIGBRK319BLK, EDEMO4, Used, Condition Like New, Open Box , MPN: SIGBRK319BLK-EDEMO4 , Code: 3P4-BCM-KILI1-SIGBRK319BLK-EDEMO-OB-A
  • DEMO, Killer Innovations Sig P320 Compensator, Black, SIGBRK319BLK , MPN: SIGBRK319BLK-DEMO , Code: 3P4-BCM-KILI1-SIGBRK319BLK-DEMO
Compare (0)