Luth-AR AR-15 .308 A2 Flash Hider/Compensator 5/8-24 Manganese Phosphate Black. 308 Specifications for Luth-AR AR-15 .308 A2 Flash Hider/Compensator: Manufacturer: Luth-AR Color: Black Caliber: .308 Winchester Finish: Manganese Phosphate Fabric/Material: 4140 Chrome Moly Threads per Inch: 5/8x24 Gun Make: AR Platform Gun Model: AR-15 Weight: 0.5 lb Projectile Caliber: .308 Caliber Features of Luth-AR AR-15 .308 A2 Flash Hider/Compensator Thread Pitch: 5/8 - 24 4140 Chrome Moly Finish: Manganese Phosphate Package Contents: Luth-AR AR-15 .308 A2 Flash Hider/Compensator What firearm models does the manufacturer say Luth-AR AR-15 .308 A2 Flash Hider/Compensator is compatible with? The manufacturer says that Luth-AR AR-15 .308 A2 Flash Hider/Compensator is compatible with AR-15Luth-AR 308-BL-06-A2: AR-15 .308 A2 Flash Hider/Compensator 5/8-24 Manganese Phosphate Black