GrovTec US G-Nite Flash Hider .223 Remington/5.56x45mm NATO 1/2x28 Nitride Black. Specifications for GrovTec US G-Nite Pronged Flash Hider: Manufacturer: GrovTec US Color: Black Finish: Nitride Fabric/Material: Machined steel Gun Make: Universal Gun Model: Universal Gun Type: Rifle Features of GrovTec US G-Nite Pronged Flash Hider One Piece Steel Construction Package Contents: GrovTec US G-Nite Pronged Flash Hider Crush Washer What firearm models does the manufacturer say GrovTec US G-Nite Pronged Flash Hider is compatible with? The manufacturer says that GrovTec US G-Nite Pronged Flash Hider is compatible with UniversalGrovTec US GTHM355: G-Nite Flash Hider .223 Remington/5.56x45mm NATO 1/2x28 Nitride Black