The Guntec USA 1326-MB-P-GREEN Slip Over Barrel Shroud with Multi Port Muzzle Brake offers unmatched precision and performance, combining sleek aesthetics with advanced functionality. Constructed from durable T6 aluminum and finished in anodized green, this essential accessory enhances your firearm's setup while providing excellent compatibility with .223 and 5.56 calibers. T6 Aluminum construction Dual purpose: Barrel shroud and muzzle compensator Length: 5.5 inches Made in the USA Inner diameter: 0.5 inches 1/2 x 28 thread compatibility Multi-port "Gatling Gun" style muzzle brake reduces felt recoil by up to 70 percent Outer diameter: 1.1875 inches Compatible with 9mm with 1/2 x 28 thread Slips over barrel and threads on securely Works with .223/5.56 caliber Weight: 6 ounces Covers 4 inches of barrel, extends barrel by 1.5 inches Enhance your shooting accuracy and comfort with the Guntec USA 1326-MB-P-GREEN, essential for any firearm enthusiast.