The Rival Arms RA50G401T is designed for seasoned shooters who understand the limitations of plastic guide rods. They know that such rods can chip, crack, or break, often leading to feeding or ejection failures. On top of that, flex in the rod can interfere with accuracy.Rival Arms offers a solution to these problems through their Guide Rod Assemblies. These assemblies not only address the common issues associated with plastic rods, but they also offer a lifetime of reliable service. The key features of this product include a premium spring of stock weight, along with a fully assembled rod.What sets the Rival Arms Guide Rod Assemblies apart is the manufacturing process. The rod is CNC-machined from a solid stainless steel billet, providing a stronger and more corrosion-resistant part. A highlight of this product is that there is no need for a gunsmith - you can easily handle assembly yourself.