Kexuan Muzzle Brake with Sound Redirect Option for AR-10 LR .308/7.62 NATO 5/8inx24 thread Steel with Black Phosphate Finish. 308/7.62 NATO. Crush washer and jam nut. High quality steel construction with Phosphate finish and CNC machined tech Specifications for Kexuan AR-10 .LR 308 Muzzle Brake w/ Sound Redirect Option: Manufacturer: Kexuan Color: Black Projectile Caliber: .308 Caliber Caliber: 7.62x51mm NATO Finish: Black Knurled Phosphate Fabric/Material: Stainless Steel Threads per Inch: 5/8x24 Gun Make: AR Platform Gun Model: DPMS LR-308 AR-10 Condition: New Package Contents: Kexuan AR-10 .LR 308 Muzzle Brake w/ Sound Redirect Option Jam nut Crush washer What firearm models does the manufacturer say Kexuan AR-10 .LR 308 Muzzle Brake w/ Sound Redirect Option is compatible with? The manufacturer suggests that Kexuan AR-10 .LR 308 Muzzle Brake w/ Sound Redirect Option is compatible with AR-10 DPMS LR-308Kexuan MZ-04-02-B: Muzzle Brake with Sound Redirect Option for AR-10 LR .308/7.62 NATO 5/8inx24 thread Steel with Black Phosphate Finish