The KAK Industry Plan B Universal Muzzle Device in 5/8×24 (brand part no. 411-2103-001) is a muzzle device built to work with KAK’s Plan B suppressor mounts. KAK machines it in house from 17-4 stainless steel and finishes it in nitride. A taper ahead of the threads gives repeatable lockup and a proper seal between the muzzle device and the mount, and the thread pitch is engraved on the part so a 5/8×24 device is easy to tell from its siblings. It suits shooters who want a clean, compact threaded muzzle device with a universal bore.

Key Specifications

• The thread pitch is 5/8×24, engraved on the device so it is easy to identify against other Plan B sizes.
• Overall length is 1 inch, a short profile that adds very little to the front of the barrel.
• The outside dimension is .895 inch, sized to mate with Plan B suppressor mounts.
• Weight is 1.6 ounces, light enough that it barely changes how the rifle balances.
• Material is 17-4 stainless steel, a strong, corrosion-resistant alloy for a part that sees heat and carbon.
• The finish is nitride, a hard surface treatment that resists wear and corrosion.
• Milled 13/16 inch wrench flats make installation with a standard wrench straightforward.
• The bore is universal, and the thru bore for each size is the minor diameter of the threads, so if it fits on your barrel the bullet will pass.
• A taper followed by threads gives repeatable lockup and a seal against the suppressor adapter.
• Every device is precision machined in house by KAK Industry.

Frequently Asked Questions

What does this muzzle device mount to? KAK states that Plan B muzzle devices are compatible with Plan B suppressor mounts, and this 5/8×24 version threads onto barrels cut for 5/8×24.

How should it be installed? KAK recommends Rocksett for installation and 20 to 25 foot-pounds of torque.

Will a bullet clear the device? Yes. KAK sizes the thru bore of each pitch to the minor diameter of the threads, so if the device fits your barrel the bullet will pass.

Buy the KAK Industry Plan B Universal Muzzle Device, 5/8×24

A muzzle device that locks up the same way every time is the point of the Plan B system, and this one is machined to do exactly that. Order the 5/8×24 version from KAK Industry‘s lineup of AR muzzle devices at our Lubbock, Texas gun shop for fast, insured shipping.