LMT Defense Single-Port Muzzle Brake, 5.56, 1/2x28, HUB/Xeno Compatible

LMT Defense Single-Port Muzzle Brake, 5.56, 1/2x28, HUB/Xeno CompatibleThe LMT Defense Single-Port Muzzle Brake is a compact 5.56 muzzle device for rifles with 1/2x28 barrel threads. Its single-port design redirects propellant gas to provide controlled recoil mitigation without the length and mass of a larger multi-port brake. This exact variant is manufacturer SKU RSB1228556, item 430120009, and UPC 850076573157.The brake is CNC-machined from 17-4 stainless steel and measures 1.338 inches overall, adding approximately 0.813 inch beyond the muzzle. A 0.300-inch bore identifies the 1/2x28 configuration. Its compact form works as a standalone brake and also supports compatible suppressor-mount systems.Order the exact LMT Defense 1/2x28 single-port brake from ARMSAGORA's retailers. Confirm barrel threads, projectile clearance, and suppressor-mount compatibility before installation.Compact Single-Port Recoil ControlA single-port brake provides a focused path for muzzle gas while keeping the device short. This design is intended for shooters who want useful recoil management and a clean rifle profile rather than the maximum gas redirection of a longer multi-port brake. The ample wrench flats provide a practical tooling surface for installation and removal.The short body also occupies less space inside a compatible suppressor blast chamber than a longer brake. That geometry can reduce concentrated baffle exposure directly in front of the muzzle device while preserving the brake's role as a mounting interface. Performance depends on the host rifle, ammunition, and attached system.HUB and Xeno Mount SupportThe suppressor-side interface works with the LMT HUB Regulator Mount Adapter, Dead Air Xeno pattern mounts, and compatible third-party HUB or Xeno pattern systems. It can support LMT rifle suppressors including the ION 30, ION LT, and ION K when used with the appropriate matching mount. Compatibility is determined by the complete mount stack, not by barrel thread alone.A taper-lock gas seal helps create a secure connection at the mount. The suppressor-side left-hand thread arrangement is designed to resist loosening the muzzle brake when the adapter or suppressor is removed. Always verify the exact adapter, suppressor bore, thread standard, and alignment for the planned setup.Fitment and InstallationThis model uses 1/2x28 host threads and a 0.300-inch bore for the 5.56 configuration. Do not install it on a barrel with a different thread pitch, an incompatible shoulder, or a projectile diameter that exceeds the device rating. Thread adapters can introduce additional alignment variables and should not be assumed compatible.A shim kit is included for port alignment. Begin with an unloaded firearm and follow the barrel and suppressor makers' installation requirements. Correct timing, shoulder contact, torque, and bore alignment are essential. A qualified gunsmith should install the device when thread condition, muzzle shoulder geometry, or suppressor alignment is uncertain.Product SpecificationsManufacturer: LMT DefenseProduct: Single-Port Muzzle BrakeManufacturer SKU: RSB1228556Item: 430120009UPC: 850076573157Caliber Configuration: 5.56Host Thread: 1/2x28Bore Diameter: 0.300 inchMaterial: 17-4 stainless steelOverall Length: 1.338 inchesAdd-On Length: 0.813 inchIncluded: Shim kitFrequently Asked QuestionsIs this the 1/2x28 or 5/8x24 version?This is the 1/2x28, 0.300-inch bore version identified by manufacturer SKU RSB1228556.Can it serve as a suppressor mount?Yes, with a compatible LMT HUB Regulator, Dead Air Xeno, or matching third-party mount and an appropriately rated suppressor. Verify the complete system before use.Is a timing shim kit included?Yes. A shim kit is included to support correct port alignment during installation.Buy the LMT Defense 5.56 Single-Port Muzzle Brake at ARMSAGORA's retailers. Select UPC 850076573157 for the exact 1/2x28 RSB1228556 configuration.