JARD Baffled Brake .223 Remington 1.375in Length 3/4in 4140 Steel Alloy Black. This brake disperses the majority of exiting gas horizontally reducing backward force and felt recoil. Comparatively traditional barrels or barrels without muzzle devices gas is predominately expelled inline with the barrel creating backward force that adds to recoil. Specifications for JARD Baffled Brake: Manufacturer: JARD Color: Black Projectile Caliber: .223 Caliber Caliber: .223 Remington Fabric/Material: 4140 Alloy Steel Threads per Inch: 1/2x28 Outer Diameter: 0.75 in Length: 1.375 in Package Contents: JARD Baffled Brake JARD 2300: Baffled Brake .223 Remington 1.375in Length 3/4in 4140 Steel Alloy Black