Centennial Defense Systems MOD2 Stainless Steel Guide Rod Assembly for Smith & Wesson M&P 5in Barrel w/Flat Face Screw, 22lb Spring, Black - Coated Rod, 12486

This eliminates guide rod flex and ensures it will not chip crack or break like plastic guide rods providing a lifetime of reliable service. Flat wound recoil springs are manufactured of certified aerospace spec materials heat treated shot peened and stress relieved to maximize durability.