FP guide rods are CNC machined and feature a Black Nitride finish. I have found Black Nitride to be extremely durable and corrosion resistant.
These are a great replacement for the factory plastic guide rod in the Smith & Wesson M&P models and allow the use of different recoil springs to tune your gun to your ammo for smoother recoil impulse and better sight track.
WE RECOMMEND USING BLUE LOCTITE ON THE SPRING RETAINING SCREW.
