The KAK Plan B universal muzzle device (brand part no. 414-2103-001) is threaded 11/16×24 and built around KAK’s Plan B mounting system, sized for larger-caliber applications than KAK’s 1/2×28 offering. Instead of a simple straight thread, Plan B muzzle devices use a taper followed by threads, giving a repeatable lockup and a proper seal between the device and a compatible Plan B suppressor hub. That precision matters because some suppressor manufacturers won’t honor warranty claims if a different brand of muzzle device is used with their suppressor hub. KAK recommends Rocksett thread locker and 20 to 25 ft-lbs of torque during installation to keep the taper seated correctly.

Key Specifications

• Threaded 11/16×24 for larger-caliber muzzle fitment.
• Uses a taper-then-thread design for repeatable lockup and a proper seal.
• Built specifically to mate with Plan B suppressor hubs.
• KAK recommends Rocksett thread locker during installation.
• Install torque spec is 20 to 25 ft-lbs.
• Using a different brand’s muzzle device may void a suppressor manufacturer’s warranty.

Frequently Asked Questions

Does this work with any suppressor hub? It’s built specifically to mate with Plan B suppressor hubs; other brands may not seal or lock the same way.

What torque should I install this to? KAK recommends 20 to 25 ft-lbs along with Rocksett thread locker.

What thread pitch does this use? 11/16×24, sized for larger-caliber applications.

Buy the KAK Plan B Universal Muzzle Device

Get a repeatable, suppressor-ready lockup on your build. Order the KAK Industry Plan B muzzle device from our muzzle devices lineup, and our Lubbock, Texas team can help confirm hub compatibility before it ships.