Nighthawk Custom 1-Piece Recoil Spring Guide Rod with Reverse Recoil Spring Plug 1911 Gov. Stainless. These high-quality parts aid in smooth reliable cycling by completely capturing recoil spring to prevent it from binding or deforming. These parts add extra weight up front to reduce muzzle flip for improved control and fast follow-up shots. With the guide rod machined out of a solid steel billet there are no threads to work loose compromising your firearm. The backside of the guide rod has been beveled to prevent contact with the lower lugs. Specifications for Nighthawk Custom 1-Piece Recoil Spring Guide Rod with Reverse Recoil: Manufacturer: Nighthawk Custom Color: Stainless Finish: Stainless Steel Fabric/Material: Stainless Steel Gun Make: 1911 Platform Gun Model: 1911 Package Contents: Nighthawk Custom 1-Piece Recoil Spring Guide Rod with Reverse Recoil What firearm models does the manufacturer say Nighthawk Custom 1-Piece Recoil Spring Guide Rod with Reverse Recoil is compatible with? The manufacturer says that Nighthawk Custom 1-Piece Recoil Spring Guide Rod with Reverse Recoil is compatible with 1911Nighthawk Custom SP0177: 1-Piece Recoil Spring Guide Rod with Reverse Recoil Spring Plug 1911 Gov. Stainless