The Rival Arms RA50G121S is ideal for the discerning shooter who knows that plastic guide rods are prone to chipping, cracking, or breaking, causing feeding or ejection issues and potentially affecting accuracy. Flex can be an additional detriment, contributing to precision problems.Rival Arms Guide Rod Assemblies are purposefully designed to address all these concerns, ensuring a lifetime of hassle-free operation. A key feature of this rod assembly is the premium spring of stock weight, fully assembled for immediate use. The rod, expertly CNC-machined from a solid stainless steel billet, is not only stronger but offers heightened resistance to corrosion.The best part? No requirement for a gunsmith. Rival Arms makes reliability and durability easily accessible to every shooter.