The 1-piece full-length guide rod will make your 1911 operate and cycle smoother. The 1-piece full length guide rod replaces your stock recoil spring guide without pistol modification. Assembly and disassembly are the same as with stock components (however a bushing wrench is required). Features: Extends recoil spring life Improves cycling and overall operation Extends life of slide to frame fit Can improve barrel to slide fit and accuracy on older military 1911s