The KAK Industry Plan B Krink muzzle device (brand part no. 412-2103-020) is a face-mount muzzle device in 17-4 stainless with a nitride finish, threaded M24x1.5 RH for 5.56 and 7.62×39 bores. It is precision machined in house at KAK Industry and weighs 3.7 ounces at 2.55 inches long overall, with 1.55 inches protruding into the blast chamber. Plan B muzzle devices feature a taper followed by threads, which gives repeatable lockup and a proper seal between the muzzle device and a suppressor adapter. The Krink is compatible with Plan B suppressor hubs, and an installation multi-wrench is included in the box. For a shooter building a 7.62×39 or 5.56 rifle around an M24x1.5 muzzle thread, it is a purpose-built choice.

Key Specifications

• The thread is M24x1.5 RH, so it fits barrels cut to that metric pitch.
• It is a face-mount design that seals against the suppressor adapter or the barrel shoulder.
• Overall length is 2.55 inches.
• It protrudes 1.55 inches into the blast chamber.
• Weight is 3.7 ounces, light enough for a rifle barrel.
• The material is 17-4 stainless steel, a strong, corrosion-resistant alloy.
• The finish is nitride, a hard surface treatment that resists wear.
• The bore size covers 5.56 and 7.62×39.
• The Plan B taper-and-thread design gives repeatable lockup and a proper seal.
• An installation multi-wrench is included.

Frequently Asked Questions

What is the Plan B system? Plan B muzzle devices feature a taper followed by threads, which gives repeatable lockup and a proper seal between the muzzle device and a suppressor adapter. They are compatible with Plan B suppressor hubs.

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

Will it work with any suppressor? KAK notes that some suppressor manufacturers will not honor warranty claims if other brands of muzzle devices are used with their suppressors, so check your suppressor’s documentation.

Buy the KAK Plan B Krink Muzzle Device, M24x1.5 RH, 17-4 Stainless, Nitride

A well-machined muzzle device is the foundation of a good suppressor-ready rifle, and KAK machines this one in house. Order it from our Lubbock, Texas gun shop for fast shipping, and browse more AR muzzle devices.