Guntec USA AR-10/LR-308 A2 Birdcage Flash Hider .308 Cal. 308 Cal Specifications for Guntec USA AR-10/LR-308 A2 Birdcage Flash Hider: Manufacturer: Guntec USA Color: Black Finish: Phosphate Fabric/Material: Steel Threads per Inch: 5/8x24 Gun Model: AR-10 Length: 1.5 in Condition: New Projectile Caliber: .308 Caliber Diameter: 0.8 in Package Contents: Guntec USA AR-10/LR-308 A2 Birdcage Flash Hider What firearm models does the manufacturer say Guntec USA AR-10/LR-308 A2 Birdcage Flash Hider is compatible with? The manufacturer says that Guntec USA AR-10/LR-308 A2 Birdcage Flash Hider is compatible with AR-10GUNTEC USA A2CAGE-308: AR-10/LR-308 A2 Birdcage Flash Hider.308 Cal