SILVER 4.5" Extra Long Low Concussion Linear Compensator Muzzle Brake for .22LR .223 .308 9MM

Thread Pitch Select:1/2x28 TPI for .22LR .223 5561/2x28 TPI for 9mm1/2x36 TPI for 9mm5/8x24 TPI for .308/300BLK/7.62/300WINSix Ports Direct Muzzle Blast & Unburned Powder Downrange And Away From The Shooter. Made From Aluminum, It Is Lightweight And Does Not Weigh Down The Front Of The Barrel.Color: Anodized SILVERMaterial: 7075 T6 AluminumWeight：4 OZOuter Diameter: 1.24"Length: 4.55 (Extra Long)Crush Washer Included