Novox Research X-SD Ported Barrel & Muzzle Adapter Kit - 4.3" - 9mm - HUB/Alpha Suppressor Mount - Black
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Product description
Turn a Standard Blowback AR9 Into a Modular SD-Style Suppressor Host
Features
- 4.3″ ported 9mm barrel with a 1:10 twist rate
- Ported barrel system is designed to reduce projectile velocity before the suppressor
- Designed for compatible traditional blowback AR9 uppers using standard AR-pattern barrel and barrel-nut dimensions
- Includes both 1.375×24 Bravo/HUB and 1.125×28 Alpha suppressor mounting modules
- Integrated taper interface seals the barrel and shroud assembly without an O-ring
- Can function without a suppressor as a forward-blast diffuser and linear compensator
- Shroud assembly measures approximately 5.2″ from the receiver face with the HUB module or 4.92″ with the Alpha module
- Current-production tube is Rocksett-bonded to the taper adapter from the factory
- Black nitride finish
The Novox Research X-SD replaces a standard AR9 barrel with a 4.3″ ported barrel and integrated shroud system designed around SD-style suppressed operation. Gas is vented through the barrel ports before the projectile exits, reducing velocity while the included Alpha and HUB modules allow the system to accept a broad range of compatible 9mm suppressors. Its modular mounting system avoids locking the build into a single suppressor thread standard.
Note: Suppressor is not included. The barrel-to-taper-adapter threads are proprietary and are not M18. Verify barrel nut and handguard clearance before installation; Novox specifies a maximum barrel-nut length of 2.24″ and an assembled outside diameter up to 1.27″ with the Alpha module or 1.5″ with the HUB module. This 4.3″ barrel may create an NFA-regulated short-barreled rifle when installed in certain stocked firearm configurations.
Specifications
- Brand: Novox Research
- Model: X-SD
- MPN: XSD
- Caliber: 9mm
- Barrel Length: 4.3″
- Twist Rate: 1:10
- Barrel Type: Ported
- Platform: Traditional blowback AR9
- Suppressor Mount Threads: 1.375×24 HUB / Bravo and 1.125×28 Alpha
- Assembled Length from Receiver Face: 5.2″ with HUB module / 4.92″ with Alpha module
- Maximum Barrel Nut Length: 2.24″
- Maximum Outside Diameter: 1.5″ with HUB module / 1.27″ with Alpha module
- Finish: Nitride
- Color: Black
What’s Included
- 1x Novox Research X-SD 4.3″ Ported 9mm Barrel
- 1x X-SD Taper Adapter and Tube Assembly
- 1x 1.375×24 Bravo/HUB Module
- 1x 1.125×28 Alpha Module
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Questions & Answers 1
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Greetings, Was very impressed with your article. I own (2) variants of the 9mm CZ Scorpion EVO 3 and wanting to confirm compatibility utilizing your Novox Research X-SD Ported Barrel & Muzzle Adapter Kit - 4.3" - 9mm - HUB/Alpha Suppressor Mount - Black. Have been anxiously awaiting a ported barrel solution with muzzle adapters to take my Scorpion’s to the next level, while utilizing a suppressor. Lastly, will I require any other parts, such as a special hand guard for your solution? If so, might you make a recommendation of the best options. Sincerely, Mike Walent
michael.walent · Oct 28, 2026AT3 Support Team — The Novox Research X-SD kit is designed for the AR-9 / PCC platform rather than the CZ Scorpion EVO 3 trunnion pattern, so it is not directly compatible with your Scorpion, and running an integrally suppressed or tucked barrel setup on a Scorpion would require an aftermarket wide-diameter handguard (such as an HB Industries Pakse Sapper or flat-front handguard) with an internal diameter large enough to clear your suppressor.
Warranty & returns
90-day no-hassle returns
The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.
If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.
