Yankee Hill Machine Phantom QD Flash Hider Features The Yankee Hill Machine Phantom QD Flash Hider is machined from 4140 steel with a black oxide finish delivering a 4.128 oz muzzle device at 2.625 inches length and 1.245 inches diameter for host platforms with 5/8x24 threading. The 5-port design reduces visible muzzle flash across unsuppressed fire retaining the flash hiding performance of the original Phantom design in an aggressive tip configuration. A high-temperature spring replaces the standard spring for improved durability and a longer service life under the sustained thermal demands of repeated suppressor use. The external locking mechanism isolates heat from the spring mechanism during sustained fire protecting the QD locking components from thermal degradation that affects internal spring designs over time. The Phantom QD Flash Hider interfaces with YHM QD sound suppressors providing a compatible muzzle device for shooters running Yankee Hill Machine suppressors. The aggressive tip geometry differentiates this model from the standard Phantom flash hider while maintaining the same proven QD mounting interface. Yankee Hill Machine Phantom QD Flash Hider Specifications Manufacturer: Yankee Hill Machine Model: Phantom QD Flash Hider Length: 2.625 Diameter: 1.245 Weight: 4.128 oz Material: 4140 Steel Finish: Black Oxide Thread Pattern: 5/8x24 Ports: 5 Compatible With: YHM QD Sound Suppressors