The KAK Industry Plan B A2 Flash Hider in 1/2×28 threads for .223 Rem/5.56 NATO (KAK part no. 410-2103-003) is a muzzle device built around KAK’s Plan B mounting system, which uses a taper followed by standard threads for a repeatable seal and lockup between the flash hider and a compatible suppressor adapter. It’s compatible with Plan B suppressor hubs, giving shooters a consistent mounting interface across their host rifles. KAK recommends using Rocksett and torquing to 20-25 ft-lbs during installation, and notes that some suppressor manufacturers won’t honor warranty claims if a different brand of muzzle device is paired with their cans.

Key Specifications

• Chambered for .223 Rem/5.56 NATO and threaded 1/2×28 at the muzzle.
• Uses KAK’s Plan B taper-and-thread mounting design for repeatable lockup.
• Compatible with Plan B suppressor hubs for a consistent mounting interface.
• Recommended install torque of 20-25 ft-lbs with Rocksett thread locker.
• Manufactured by KAK Industry as part of its Plan B muzzle device and suppressor-mount lineup.
• Uses a flash hider product form factor rather than a brake or comp.
• Some suppressor makers may void warranty coverage if a different brand’s muzzle device is paired with their can, per KAK’s guidance.
• Built for direct installation on standard 1/2×28-threaded 5.56 barrels.
• Designed to work as part of a modular mounting ecosystem rather than a single-suppressor-specific device.

Frequently Asked Questions

Will this flash hider work with any suppressor mount? It’s built to mate with Plan B suppressor hubs specifically; check compatibility before pairing it with a different mounting system.

What torque should this flash hider be installed at? KAK recommends 20-25 ft-lbs with Rocksett thread locker.

Buy the KAK Industry Plan B A2 Flash Hider

Standardize your suppressor mounting with KAK’s proven Plan B taper-thread system. Order it from our KAK Industry lineup of AR muzzle devices, shipped fast from our Lubbock, Texas gun shop.