ABC RIFLE COMPANY AR-15 A2 Style Flash Hider .223 Remington/5.56x45mm NATO 1/2x28 Cerakote Olive Drab Green. Finished in Cerakote OD Green for added corrosion resistance and tactical aesthetics its threaded at 1/2x28in to fit standard AR-15 barrels chambered in 5.56 NATO or .223 Rem. Wrench flats allow for easy installation and secure fitment making it a practical and reliable upgrade. Specifications for ABC RIFLE COMPANY AR-15 A2 Style Flash Hider: Manufacturer: ABC RIFLE COMPANY Caliber: .223 Remington 5.56x45mm NATO Finish: Cerakote Fabric/Material: 4140 Steel Threads per Inch: 1/2x28 Gun Make: AR Platform Gun Model: AR-15 Length: 2.5 in Weight: 3.5 oz Gun Type: Rifle Package Contents: ABC RIFLE COMPANY AR-15 A2 Style Flash Hider What firearm models does the manufacturer say ABC RIFLE COMPANY AR-15 A2 Style Flash Hider is compatible with? The manufacturer suggests that ABC RIFLE COMPANY AR-15 A2 Style Flash Hider is compatible with AR-15ABC RIFLE COMPANY MB15-A2-ODG: AR-15 A2 Style Flash Hider .223 Remington/5.56x45mm NATO 1/2x28 Cerakote Olive Drab Green