JMac Customs 2C 14-1LH Face Muzzle Brake with Keymount - KeyMicro Black Nitride Black. Install the JMac Customs 2C 14-1LH Face Muzzle Brake with Keymount - KeyMicro onto your firearm with a 14mm or larger barrel to greatly reduce muzzle flip and achieve a longer more accurate shooting window. These Muzzle Devices by JMac Customs greatly reduce recoil to allow you to place stronger emphasis on accurate target placement and shot execution. Also these brakes add a significant amount of length to your firearm allowing you to install suppressors. Increase the capabilities of your weapon and enhance your overall shooting experience by installing the JMac Customs RRD-2C Muzzle Brake Device with Keymount. Specifications for JMac Customs 2C 14-1LH Face Muzzle Brake w/ Keymount - KeyMicro: Manufacturer: JMac Customs Color: Black Finish: Nitride Fabric/Material: 17-4PH Stainless Steel Threads per Inch: 14x1 LH Gun Make: Kalashnikov Length: 2.2 in Features of JMac Customs 2C 14-1LH Face Muzzle Brake w/ Keymount - KeyMicro 2 Port Muzzle Brake with Keymount Package Contents: JMac Customs 2C 14-1LH Face Muzzle Brake w/ Keymount - KeyMicro JMac Customs RRD-2C-14F-KM: 2C 14-1LH Face Muzzle Brake with Keymount - KeyMicro Black Nitride Black