JMac Customs LAF 1/2-28 Flash and Sound Enhancing Muzzle Brake Black Nitride Black. 1/2-28 threadsDesigned to fit under SLR Rifleworks and similar sized rails (rail and barrel should be same length to achieve look above)1.7" wide 1.5" tallOnly adds a little over 1"17-4ph stainlessQPQ Nitrided. (L)oud (A)nd (F)lashy (28) 1/2x28 threads. The LAF (Loud And Flashy) is a LARGE single chamber muzzle brake designed to enhance sound and flash while reducing recoil and muzzle rise Specifications for JMac Customs LAF 1/2-28 Flash and Sound Enhancing Muzzle Brake: Manufacturer: JMac Customs Color: Black Finish: Nitride Fabric/Material: 17-4PH Stainless Steel Threads per Inch: 1/2x28 Gun Make: Kalashnikov Length: 1.5 in Features of JMac Customs LAF 1/2-28 Flash and Sound Enhancing Muzzle Brake Flash and Sound Enhancing Muzzle Brake Package Contents: JMac Customs LAF 1/2-28 Flash and Sound Enhancing Muzzle Brake JMac Customs LAF-28: LAF 1/2-28 Flash and Sound Enhancing Muzzle Brake Black Nitride Black