Faxon Firearms Exos-543 Ffpacompdsg-02 Exos543 Comp Gen4
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The Faxon Firearms Exos-543 Gen 4 compensator is a 9mm muzzle device engineered to tame recoil and muzzle climb on Glock Gen 4 pistols. If you're running a Glock 17, 19, or 34 Gen 4 and want to shoot faster, flatter strings with less vertical rise between shots, this aluminum compensator delivers measurable improvement in shot-to-shot consistency without the complexity of a full recoil system overhaul.
Built from 6061 aluminum with a hard anodized black finish, the Exos-543 uses a single-chamber design with uniquely angled front ports that direct gas upward as well as sideways—the key to reducing both lateral and vertical muzzle movement. This dual-plane gas deflection keeps your sights on target faster, especially during rapid fire or competitive shooting. Faxon engineered the barrel protrusion to sit flush with your slide when paired with Faxon barrels; if you're using another barrel, ensure it protrudes no more than .600" for a clean fit.
Installation is straightforward: the package includes thread locker, two 6-32 set screws, and a 1/16" Allen wrench. Thread pitch is standard 1/2x28 for 9mm. One important note: compensators can shift the timing characteristics of your pistol, so be prepared to experiment with ammunition choice, lubrication, and shooting technique to dial in optimal performance for your specific gun and load.
Key Features
- Single-chamber design with angled front ports reduces muzzle climb and recoil
- Dual-plane gas deflection improves shot-to-shot consistency
- 6061 aluminum construction with black anodized finish
- Flush-fit design optimized for Faxon barrels; compatible with others at .600" protrusion or less
- Includes thread locker, set screws, and installation tool
- Tested and verified fit on Glock 17, 19, and 34 Gen 4
Specifications
| Brand | Faxon Firearms |
| Model | Exos-543 |
| Caliber | 9mm |
| Thread Size | 1/2x28 |
| Compatibility | Glock Gen 4 (tested: 17, 19, 34) |
| Material | 6061 Aluminum |
| Finish | Black Anodized |
| Length | 1.1 inches |
| Width | 1 inch |
| Height | 1.27 inches |
| Weight | 0.06 lbs |
| Included Hardware | Two 6-32 set screws, thread locker, 1/16" Allen wrench |
Frequently Asked Questions
Will this compensator fit my Glock Gen 4?
The Exos-543 is specifically designed for Glock Gen 4 platforms and has been tested on the Glock 17, 19, and 34 Gen 4. Fitment with other Glock generations or models cannot be guaranteed, so verify your pistol generation before ordering.
What barrel length do I need for a flush fit?
The compensator is optimized for Faxon barrels. If you're using a non-Faxon barrel, it should protrude 0.600 inches or less from the slide for proper flush fitment.
What comes in the box?
Each compensator includes thread locker, two 6-32 set screws for mounting, and a 1/16" Allen wrench for installation and adjustment.
Will adding a compensator affect how my pistol shoots?
Yes. Compensators can affect your pistol's timing and may require adjustments to lubrication, ammunition choice, or shooting technique to optimize performance. Plan to test and tune for your specific gun and load combination.
