The AAC 51T Pingless Flash Hider is a three-prong suppressor mount and flash hider designed for 13.7-inch barrels requiring a pinned and welded muzzle device to meet the 16-inch legal minimum barrel length.
Type: Flash Hider / Suppressor Mount
Caliber: 5.56 NATO / .223 Remington
Thread Pitch: 1/2x28
Material: Heat-Treated Steel
Finish: Black Oxide
Suppressor Compatibility: AAC 51T QD Suppressors
Intended Barrel Length: 13.7 inches (for pin and weld to 16 inches)
