Description
Big bore suppressor setups put a lot more stress on a mounting system than your average 5.56 gun, and that is exactly the problem the Xemax Adapter was built to solve. This is Dead Air's Xeno mounting concept scaled up and beefed up for .33 and .45 caliber rifles. Thread it into any HUB-pattern (1-3/8×24) suppressor and you can now mount that can on any rifle wearing a Xemax muzzle brake. Quick on, quick off, and back to the same point of impact.
How the Xemax Adapter Locks Up
The heart of the system is a self-aligning taper. As you tighten the suppressor down over the Xemax brake, the tapered surfaces pull everything concentric to the bore automatically. That translates to repeatable alignment every time you mount up, which matters a lot when you are pushing .338 Lapua Mag, 8.6 Blackout, 33 XC, .45-70, or .450 Bushmaster through a can. Dead Air machines the adapter from 4140 heat-treated chromium-molybdenum steel and coats it in black nitride, so corrosion and carbon buildup are easy to manage. At 1.135 inches long, it adds minimal length to your setup.
Pairing Your Suppressor with Xemax Mounts
This adapter was designed with the Nomax 33 and Primal in mind, but it works with any suppressor that accepts the industry standard HUB thread. If you own a Primal and want faster mounting on your big bore rifles, this adapter plus a Xemax brake on each host is the way to do it. One thing worth knowing before you order: Xemax and Xeno are two separate systems. A Xemax adapter needs a Xemax brake, and the smaller Xeno devices will not interchange with it. Also keep your suppressor's bore and caliber ratings in mind when picking hosts.
Why Run the Dead Air Xemax System
Beyond convenience, running a brake under your suppressor takes some of the beating off the can's blast baffle, which helps extend suppressor life on hard-hitting cartridges. If your big bore rifles are already wearing Xemax brakes, this adapter is the missing piece that ties the whole setup together.
Key Specifications
- Manufacturer: Dead Air Silencers
- Model: Xemax
- Manufacturer Part Number: DA456HT
- UPC: 810128161404
- Thread Pattern: HUB 1-3/8×24 (1.375×24)
- Material: 4140HT Chromium-Molybdenum Heat-Treated Steel
- Finish: Black Nitride
- Length: 1.135 in
- Product Type: Suppressor Mount / Adapter
- Compatible Suppressors: HUB-pattern cans including Nomax 33 and Primal
- Mounting System: Xemax taper mount (requires Xemax muzzle brake)
- Color: Black
- Weight: 0.148 lb (shipping)
What’s Included
- Dead Air Xemax HUB Adapter (1-3/8×24)
Frequently Asked Questions
Will the Xemax Adapter work with Xeno muzzle brakes?
No, Xemax and Xeno are separate mounting systems and are not cross-compatible. The Xemax Adapter requires a Xemax muzzle brake on your host rifle. Xemax is essentially the Xeno concept scaled up and strengthened for big bore cartridges, so the dimensions are different between the two.
Which suppressors does the Dead Air Xemax HUB Adapter fit?
It threads into any suppressor with the industry standard HUB pattern, which is 1-3/8×24. Dead Air designed it primarily around the Nomax 33 and Primal, but plenty of HUB-compatible cans from other makers will accept it too. Just make sure your suppressor's bore diameter is appropriate for the caliber you plan to shoot.
What calibers is the Xemax system designed for?
Xemax was built with big bores in mind. Think .33 caliber cartridges like .338 Lapua Mag, 33 XC, and 8.6 Blackout on bolt guns, plus .45 caliber rounds like .45-70 and .450 Bushmaster on lever actions and large-frame MSRs. The heat-treated 4140 chromoly construction is what lets it handle that kind of pressure and recoil.
Does the Xemax Adapter return to zero when I remove and remount my suppressor?
That is the whole point of the design. The self-aligning taper pulls the suppressor concentric to the bore every time you torque it down, giving you consistent alignment and repeatable point of impact. It is a solid choice for precision rifles where you swap the can between hosts.







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