Grey Ghost Precision Muzzle Brake .224/5.56mm 1/2x28 Thread Nitride Finish Black. The experts at Grey Ghost Precision know this all too well which is why they designed the Grey Ghost Precision 5.56 Cal Muzzle Brake to redirect those forward-moving gases backward reducing your recoil by a noticeable margin. These Muzzle Brakes & Compensators are built out of rugged stainless steel with a black nitride coating that not only protects them from corrosion and abrasion but also makes them easier to clean. After you install the Grey Ghost Precision 5.56 Cal Muzzle Brake on your weapon you can mount it with the crush washer or by purchasing a custom crush washer. Whether you're a tactical shooter or average Joe your rifle will be a lot more precise and accurate with the help of a Grey Ghost Precision 5.56 Cal Muzzle Brake. Specifications for Grey Ghost Precision 5.56 Cal Muzzle Brake: Manufacturer: Grey Ghost Precision Color: Black Projectile Caliber: .224 Caliber Caliber: 5.56x45mm NATO Finish: Black Nitride Fabric/Material: Stainless Steel Threads per Inch: 1/2x28 Included Accessories: Crush Washer Included Package Contents: Grey Ghost Precision 5.56 Cal Muzzle Brake Grey Ghost Precision GGP-MB-556: Muzzle Brake .224/5.56mm 1/2x28 Thread Nitride Finish Black