KAK PLAN B UNVRSL MZL DEVICE 1/2X28

The KAK Plan B muzzle device in 1/2x28 thread pitch is a precision-engineered adapter designed to bridge your rifle barrel and a Plan B suppressor mount. Built in-house by KAK Industry and finished in 17-4 stainless nitride, this universal muzzle device combines a tapered shoulder with threads to deliver repeatable lockup and a clean seal every time you attach your suppressor. If you're running a suppressor system that uses Plan B mounts, this device ensures consistent, no-rattle performance across thousands of rounds.

The taper-and-thread design is what sets this platform apart from simple threaded adapters. That shoulder seats positively in the suppressor mount, eliminating the guesswork and wobble that can come from thread-only connections. KAK machines these in-house to tight tolerances, and the milled flats on the body make hand-installation and removal straightforward—no special tools needed, just a wrench and common sense.

At just 1.6 ounces and 1 inch in overall length, the Plan B doesn't add bulk to your setup. The nitride finish stands up to the punishment of field use and cleaning solvents. Each device is engraved with its thread pitch, so you'll never mix up a 1/2x28 with another size. For installation, use a quality threadlocker like Rocksett and torque to 20–25 ft-lbs; over-torquing can damage the threads on lighter barrels.

One important note: some suppressor manufacturers tie warranty coverage to the use of their own muzzle devices or approved brands. Before you buy, confirm that your suppressor maker authorizes Plan B mounts. This device is engineered for that specific ecosystem and performs best within it.

Key Features

• Tapered shoulder and threads for repeatable, rattle-free lockup with Plan B suppressor mounts
• Precision in-house machining and 17-4 stainless nitride finish for durability
• Milled flats allow easy hand installation and removal without special tools
• Thread pitch engraved on body for quick identification
• Lightweight (1.6 oz) and compact (1 in. length) design minimizes added bulk
• Universal bore diameter (.895 in.) accommodates a wide range of calibers

Specifications

Frequently Asked Questions

What suppressor mounts does the KAK Plan B muzzle device work with?

The Plan B is engineered specifically for Plan B suppressor mounts. Before purchase, verify that your suppressor or mount system is compatible with the Plan B platform. Some suppressor manufacturers restrict warranty claims to their own muzzle device brands, so check your suppressor's documentation first.

What thread pitch does this model have?

This is the 1/2x28 version, the most common pitch for .223 Remington, 5.56 NATO, and other rifle calibers in that family. The thread pitch is engraved on the device for easy reference.

How do I install the Plan B muzzle device?

Use a 13/16-inch wrench on the milled flats to install. KAK recommends applying Rocksett (a thermal threadlocker) to the threads and torquing to 20–25 ft-lbs. Do not exceed this torque range, as over-tightening can strip threads on your barrel.

What calibers and barrel types will this fit?

The universal bore and 1/2x28 thread pitch make it compatible with any rifle barrel that has that thread size, including .223, 5.56 NATO, and other rounds in that class. Your barrel must already have 1/2x28 threads. This is not a universal fit for all rifles—verify your barrel's thread pitch before ordering.