JE Machine Tech Standoff Muzzle Brake w/ Crush Washer .308 Caliber BLack PS-MZ23B. Specifications for JE Machine Tech Standoff Muzzle Brake w/ Crush Washer: Manufacturer: JE Machine Tech Color: Black Finish: Black Oxide Gun Make: AR Platform Gun Model: AR-15 Length: 2.86 in Included Accessories: Crush Washe Features of JE Machine Tech Standoff Muzzle Brake w/ Crush Washer Designed for .223/5.56 barrels 2 recoil reducing ports and 3 baffles Package Contents: JE Machine Tech Standoff Muzzle Brake w/ Crush Washer Crush Washer What firearm models does the manufacturer say JE Machine Tech Standoff Muzzle Brake w/ Crush Washer is compatible with? The manufacturer suggests that JE Machine Tech Standoff Muzzle Brake w/ Crush Washer is compatible with AR-15JE Machine Tech PS-MZ23B: Standoff Muzzle Brake w/ Crush Washer .308 Caliber BLack