Reduces muzzle brake with the aid of 4 ports on top. The 2 ports on either side direct gas horizontally keeping recoil to a minimum. The front three prongs help direct the remaining gas and concussion forward from the shooter. All these elements make up a very comfortable muzzle brake for indoor and outdoor shooters. Where other muzzle brakes direct gas only horizontally MFT's comp takes it a step further.a For 5.56/.223 calibera 2 port design for lateral gas dispersion aids in reducing recoila 4 top port design aids in keeping the muzzle brake downa 3 prong design aids in directing gas and concussion forward and away from shootera 416 Stainless Steela Black Nitride Finisha Milspec Crush Washer Included - 17PH4 Stainless Steel pre-hardened Weight: 1.568ozOD: .750"Length: 2.00"