Description
Anyone running a HUB suppressor on a Cherry Bomb or Rearden-style taper device already knows the drill: the standard-length adapters work great until you bolt on a longer three-port muzzle device and run out of room. That's exactly the gap the PWS BDE PUB-XL fills. It threads into the 1.375×24 HUB interface on the rear of your suppressor and gives you the added clearance those extended devices need, so everything seats correctly and locks up the way it should.
How the PUB-XL Mount Works
The design is simple and that's what makes it good. The tapered interface pulls the can down tight and concentric every time you spin it on, with no wrenches, collars, or shims involved. Once the mount is torqued into your suppressor (PWS calls for 25 to 35 ft-lbs max), swapping the can between hosts takes seconds, and it returns to the same position each time so your point of impact stays predictable. It plays nice with PWS FRC compensators, the Q LLC Cherry Bomb, Rearden muzzle devices, and other taper mounts built to that same pattern.
Built to Take Abuse
This is a stainless steel part wearing a black Cerakote finish, made in the USA by Primary Weapons Systems. Heat, carbon, and weather are just part of life at the muzzle end of a rifle, and this mount is built for that environment. It's a compact piece too, measuring roughly 1.35 inches long, so it adds minimal length and weight to your setup.
Why Pick the XL Over the Standard PUB
If you're running standard-length taper devices, the regular PUB mount handles that fine. The XL exists specifically for three-port comps and other longer muzzle devices where the standard mount doesn't provide enough depth. If your rifle wears an FRC three-port or a similar extended device, this is the version you want. One mount per suppressor is the way to go if you rotate a single can across several rifles, since you can leave a compatible muzzle device on each host and move the suppressor freely between them.
Key Specifications
- Manufacturer: Primary Weapons Systems
- Manufacturer Part Number: BDE-PUBXL
- UPC: 811154034120
- Model: BDE PUB-XL Mount
- Product Type: Suppressor Mount / HUB Interface
- Thread Pitch: 1.375×24 (HUB standard)
- Muzzle Device Compatibility: PWS FRC compensators, Q LLC Cherry Bomb, Rearden MFG taper devices
- Material: Stainless steel
- Finish: Black Cerakote
- Torque Spec: 25-35 ft-lbs max
- Dimensions: Approx. 1.350 in L x 1.490 in W x 1.490 in H
- Country of Origin: USA
What’s Included
- PWS BDE PUB-XL suppressor mount
Frequently Asked Questions
What's the difference between the PUB-XL and the standard PWS PUB mount?
Both use the same 1.375×24 HUB thread and the same taper interface, but the XL provides additional internal clearance. That extra depth is what lets it seat properly on three-port muzzle devices and other extended-length comps where the standard PUB runs out of room. If your muzzle device is a longer three-port design, go with the XL.
Which suppressors will the PUB-XL mount fit?
It fits any suppressor with the industry-standard HUB rear interface, meaning 1.375×24 internal threads. That covers a huge range of modern modular cans from most major suppressor makers. Just make sure your can has enough rear thread depth to fully seat the mount before torquing it down.
Do I need tools to attach my suppressor once the PUB-XL is installed?
No. The mount itself gets torqued into the suppressor once, at 25 to 35 ft-lbs max, and after that the can spins onto compatible taper muzzle devices by hand. The tapered interface self-centers and locks up tight, so attachment and removal are quick and repeatable with no wrenches at the range.
What muzzle devices work with the PWS PUB-XL?
It's built for PWS FRC compensators, the Q LLC Cherry Bomb, Rearden Manufacturing devices, and other muzzle devices that share that same taper-mount pattern. The XL is specifically optimized for three-port and extended-length devices. If you run multiple rifles, put a compatible device on each one and move a single suppressor between them.







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