One piece CNC construction maintains solid integrity 5-inch barrel length ensures a fixed trajectory Built with a reinforced machined aluminum alloy Reinforced build with a smooth chrome finish Precision upgradable part enhances pistol performance Compatible with Marui and most other 5.1 M1911 pistols In the Box 1X Pistol Barrel Specifications: Build Aluminum Compatibility Marui / 5.1 M1911 Pistols Overall Length 5 Inches Weight 0.13 lbs Color CHROME California Proposition 65 Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov