The Nighthawk custom (FM series) Match Grade barrel Bushing is a pinnacle of precision engineering, crafted from premium 416 stainless steel to meet the demands of serious shooters. This fully Machined component is CNC machined from solid steel billets, ensuring unmatched durability and strength, far surpassing cast, metal injected or polymer-based alternatives. Designed specifically for .580 inches O. D. Barrels, it features an oversized .581 inches I. D. And .699 inches O. D., allowing for meticulous custom gunsmith fitting. This ensures a precise lockup, enhancing the accuracy and performance of your finely-tuned 1911. With a robust .100 inches thick flange and an overall length of .828 inches, this bushing is engineered for optimal performance. Nighthawk custom's commitment to quality is evident in every detail, providing components that enhance both reliability and accuracy. Supported by a lifetime warranty, this barrel bushing promises enduring performance, making it an essential upgrade for those who demand the best from their firearms. Flange - 0.10 inches thick