AAC BlackOut Flash Hider 5.56mm 51T 1/2×28

The AAC BlackOut Flash Hider is designed for 51T mounts and reduces visible muzzle flash, particularly on short barrels. Its open-end 3-prong configuration is described as stronger than comparable 4-prong designs and avoids wear issues associated with closed-end units. According to the manufacturer, the BlackOut is machined from a high-strength aerospace steel alloy and finished in a corrosion-resistant SCARmor coating. A Rocksett is included for secure mounting.

Key Specifications

• The product type is Flash Hider.
• The model is Blackout.
• The unit fits 51T Mount systems.
• Caliber compatibility is listed as .223 REM/5.56 NATO.
• The thread pattern is 1/2×28.
• The finish is described as SCARmor corrosion-resistant finish.
• The design is an open-end 3-prong configuration.
• A Rocksett is included for mounting security.
• The listed weight is 0.35.
• The listed length is 5.8.

Built for durability and reliable service on platforms that use the 51T interface, the AAC BlackOut offers a compact, mechanically robust option for reducing flash signature without adding complex or closed-end geometry. Its machined construction and corrosion-resistant finish aim to provide lasting function under routine use while the included Rocksett helps maintain secure attachment during operation.