The Lantac Dragon Plan-B Long Muzzle Brake, 9mm, 1/2×28 (Lantac part no. DGN9MMB-PBL) is a Plan-B hub-mount muzzle brake from Lantac USA that pairs recoil control with a mount for Plan-B suppressor hubs. Lantac’s Short Energy Pulse design shortens the length of recoil so repeated shot energy does not overlap, helping keep the rifle on target. This long version is 2.575 inches overall and threads 1/2×28. Precision-made on Swiss lathes and nitrided for corrosion resistance, it suits builders running a Plan-B hub who want a brake that stays on the rifle.

Key Specifications

• Caliber is 9mm, so the brake is matched to the cartridge it was made for.
• Thread is 1/2×28 to Plan-B, the muzzle thread for the Plan-B hub mount.
• The long body measures 2.575 inches long, which sets how far the brake extends past the muzzle.
• Mount diameter is 0.900 inch, the dimension to check against your Plan-B hub.
• Material is AISI4140 steel, hardened for durability under repeated fire.
• The finish is QPQ (Quench Polish Quench) nitride to AMS2753D, for corrosion resistance and a longer service life.
• The brake is precision machined on Swiss lathes for consistent tolerances.
• A timing shim set comes with it so you can time the brake to the rifle.
• Lantac’s Short Energy Pulse design reduces the length of recoil and helps limit muzzle climb.
• Each brake is serial numbered for quality control and made in the USA.

Frequently Asked Questions

What does it mount to? It is a Plan-B hub-mount brake, so it is made to accept the Plan-B hub.

Is the mount licensed from Q? No. Lantac states the mount design is not licensed from Q, so a suppressor warranty will be affected, and it says to follow the shooting guidance for the Plan-B hub supplied by Q LLC and others.

What is included? A timing shim set comes with the brake, and Lantac recommends Rocksett semi-permanent thread locker, which is sold separately.

Buy the Lantac Dragon Plan-B Long Muzzle Brake, 9mm, 1/2×28

Add Plan-B hub compatibility to your rifle with a brake machined in the USA. Order it from Lantac USA‘s selection of AR muzzle devices, and it ships fast from our Lubbock, Texas gun shop.