Guntec USA AR-10/LR-308 Gen 2 A2 Ribbed Birdcage Flash Hider .308 Cal. 308 Cal Specifications for Guntec USA AR-10/LR-308 Gen 2 A2 Ribbed Birdcage Flash Hider: Manufacturer: Guntec USA Color: Black Finish: Nitride Fabric/Material: Steel Threads per Inch: 5/8x24 Gun Model: AR-10 Model Generation: 2 Length: 1.5 in Projectile Caliber: .308 Caliber Diameter: 0.8 in Package Contents: Guntec USA AR-10/LR-308 Gen 2 A2 Ribbed Birdcage Flash Hider What firearm models does the manufacturer say Guntec USA AR-10/LR-308 Gen 2 A2 Ribbed Birdcage Flash Hider is compatible with? The manufacturer says that Guntec USA AR-10/LR-308 Gen 2 A2 Ribbed Birdcage Flash Hider is compatible with AR-10GUNTEC USA A2CAGE-308-G2: AR-10/LR-308 Gen 2 A2 Ribbed Birdcage Flash Hider.308 Cal