AAC Blackout Flash Hider 51T 1/2x28 5.56 – AR-15 Compatible

The AAC Blackout 51T Flash Hider is a dual-purpose muzzle device that reduces muzzle flash while serving as a quick-detach mount for AAC 51T-compatible suppressors. The four-prong design disrupts propellant gases to minimize visible signature during low-light shooting, and the 51T taper mount system provides a secure, repeatable interface for fast suppressor attachment when needed.

Machined from heat-treated steel with a manganese phosphate finish, this flash hider installs on standard 1/2x28 threaded barrels common to 5.56 NATO and .223 Remington AR-15 rifles. The unit includes a crush washer for proper timing. No permanent modifications required—standard wrench flats allow installation with an armorer's wrench or adjustable wrench.

• Type: Flash Hider / Suppressor Mount
• Caliber: 5.56 NATO / .223 Remington
• Thread Pitch: 1/2x28
• Material: Heat-Treated Steel
• Finish: Manganese Phosphate
• Mount System: AAC 51T Taper Mount
• Compatible Firearms: AR-15 and other rifles with 1/2x28 threaded barrels