AAC Blackout 51T flash hider for 5.56mm 1/2"-28

MSRP: $169.99
(You save $91.99 )
ships from our shop in 5 to 8 days (+/-)

AAC Black Out Flash Hider 51T for 5.56mm barrels threaded in 1/2-28

This Advanced Armament Corp Flash Hider 51T 5.56MM 1/2×28 is an extremely efficient design that effectively eliminates muzzle flash, even on short barrels. The open-end, 3-prong design of the Blackout is inherently stronger than 4-prong units, and is not subject to the wear and erosion commonly encountered with closed-end designs. All Blackout flash suppressors are machined from high strength aerospace steel alloy and coated in a hard, durable, corrosion resistant SCARmor finish.

The Advanced Armament AAC 51T "BLACKOUT" Flash Hider is designed to eliminate muzzle flash, even on CQB-length barrels. The 51t Flash Hider is inherently stronger and more impact resistant than four prong designs, while not being subject to the rapid erosion of closed-ended units. A high strength corrosion-resistant aerospace alloy, and ultra-hard SCARmor™ finish provide the highest level of durability. Military tested and selected.


  • Made to fit the AAC 665 and 762 - SD suppressors and legacy M4-2000
  • Easily Install an AAC Fast-Attach Suppressor/Muzzle Accessory
  • Effective Flash Hider
  • 1/2-28 TPI
  • 5.56mm
  • 51 tooth ratchet taper mount
  • Steel construction
  • Black finish
  • AAC part 64141


  • 556-SD
  • 762-SD
  • M4-2000
  • Mini-4
  • 762-SDN-6

Note:  Charlie's has a limited number of M4-2000 Suppressors available, click link.