LanTac USA LLC Dragon Muzzle Brake 223 Remington 5 56 NATO Fits AR Rifles Hardened Milspec Steel Nitride Finish DGN556B UPC 820103732611
Product Description
The LanTac USA LLC Dragon Muzzle Brake for .223 Remington and 5.56x45mm NATO (MPN: DGN556B) is a world-class, ultra-performance recoil reduction system designed for AR-15 rifles and carbines. Engineered with LanTac's patented Gas Block System, the Dragon virtually eliminates both felt recoil and muzzle rise, allowing shooters to stay locked on target and deliver rapid, flat-shooting follow-up shots under high-speed competitive or tactical firing schedules.
Precision-machined in the USA from hardened Mil-Spec steel, the DGN556B is finished in a durable, corrosion-resistant black Nitride surface treatment. Its unique gas management architecture features primary expansion chambers combined with short-duration, high-pressure top ports that direct expanding gases upward and outward. This creates counter-acting downward force to prevent muzzle climb while softening rearward recoil momentum without excessive side blast back to the operator.
Featuring standard 1/2x28 TPI threads, the LanTac Dragon Muzzle Brake comes complete with a crush washer for precise 12 o'clock timing alignment onto 5.56mm barrel muzzles. Fully compatible with the LanTac BMD (Blast Mitigation Device) adapter system, the DGN556B represents one of the most effective and trusted muzzle control upgrades available for modern sporting rifles.
Armorer Bench Notes & Real-World Staging Guidance:
Fitment Matrix: Fits standard AR-15 barrels threaded in 1/2x28 TPI chambered for 5.56x45mm NATO or .223 Remington. Fully compatible with the LanTac BMD (Blast Mitigation Device) collar system. (Note: Ensure proper timing orientation using the included crush washer so top expansion ports face directly upward at 12 o'clock).
- Perform a complete firearm safety check: drop the magazine, lock the bolt rearward, and visually/physically inspect the chamber to verify zero live rounds are present.
- Clean and degrease the 1/2x28 barrel muzzle threads, removing all carbon, old threadlocker, or metal burrs.
- Place the included crush washer onto the barrel threads with the cupped (concave) side facing toward the receiver.
- Thread the LanTac DGN556B Dragon muzzle brake onto the barrel until it makes contact with the crush washer by hand.
- Using a 3/4" open-end wrench on the flat wrench surfaces, torque the brake clockwise 180° to 360° until the top compensation ports align perfectly dead-center at 12 o'clock position (recommended final torque: 15–20 ft-lbs).
- Verify bore alignment visually using a cleaning rod or bore alignment rod to ensure 100% concentricity before live firing.
Key Features
- Patented Gas Block System: Drastically reduces felt recoil and muzzle rise for rapid, flat target transitions.
- Hardened Mil-Spec Steel Construction: Premium USA-sourced heat-treated steel chassis built to endure continuous high-volume fire.
- Black Nitride Surface Finish: Ultra-hard Nitride coating resists carbon buildup, chemical solvents, and high-heat gas erosion.
- Proprietary Porting Architecture: Directs gas expansion upward and sideways to eliminate muzzle climb without heavy shooter concussive force.
- Standard 1/2x28 TPI Thread Pitch: Direct drop-in fitment for standard Mil-Spec 5.56 NATO and .223 Rem AR-15 barrels.
- Includes Timing Crush Washer: Packaged w/ a crush washer to ensure simple, precise 12 o'clock timing alignment.
Product Specifications
- Brand: LanTac USA LLC
- Model/Series: Dragon Muzzle Brake
- MPN / SKU: DGN556B
- UPC: 820103732611
- Platform Compatibility: AR-15 / M4 / Modern Sporting Rifles
- Caliber Compatibility: 5.56x45mm NATO / .223 Remington
- Thread Pitch: 1/2x28 TPI
- Material: Hardened Mil-Spec Steel
- Finish / Color: Black Nitride
- System Compatibility: LanTac BMD (Blast Mitigation Device)
- Weight: 3.2 oz
- Country of Origin: USA
