XTS AR-15 30 5/8X24 Competition Muzzle Brake Black MZ 1010XP. With a thread of 5/8x24 this brake is compatible with 308 7.62 and 300 BLK and is completed with a black nitride finish. Specifications for XTS AR-15 30 5/8X24 Competition Muzzle Brake: Manufacturer: XTS Color: Black Projectile Caliber: .308 Caliber Fabric/Material: Carbon Steel Threads per Inch: 5/8x24 Gun Model: AR-15 Features of XTS AR-15 30 5/8X24 Competition Muzzle Brake Thread fits 3087.62 300 BLK Material: Carbon Steel Black Nitride Finish Package Contents: XTS AR-15 30 5/8X24 Competition Muzzle Brake What firearm models does the manufacturer say XTS AR-15 30 5/8X24 Competition Muzzle Brake is compatible with? The manufacturer says that XTS AR-15 30 5/8X24 Competition Muzzle Brake is compatible with AR-15XTS MZ 1010XP: AR-15 30 5/8X24 Competition Muzzle Brake Black