Product Description The Rival Arms Guide Rod Assembly is a drop-in upgrade designed to replace factory polymer guide rods that can crack, chip, or flex over time. This assembly is CNC-machined from tungsten billet to add weight and strength, helping improve reliability and supporting consistent cycling. It ships fully assembled with a premium, stock-weight spring for a ready-to-install solutionno gunsmithing required. Product Highlights CNC-machined tungsten guide rod adds weight and durability versus factory polymer rods Premium ISMI spring in stock weight for consistent, factory-like function Fully assembled and ready to installno gunsmithing required Designed to help reduce flex-related issues that can contribute to cycling or accuracy problems Made in the USA and backed by a limited lifetime warranty Specs Brand: Rival Arms Product Type: Guide Rod Assembly Fitment: Glock 17 Gen 4 Material: Tungsten Spring: ISMI premium spring Spring Rate: Stock (17 lb) Country of Manufacture: USA Warranty: Limited lifetime warranty In the Box: One (1) ready-to-install guide rod assembly (guide rod, spring, spring keeper, containment screw) MPN: RA50G111T UPC: 788130028469 Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the products manufacturer.