Hiya, I agree with posters that the plastic works fine, and using SS dosent void your warranty and I've never noticed any odd wear on it or the weapon. Simply prefer steel over plastic. Cz custom did remove a small burr that was causing me to have a difficult time getting it in and out the slide. My Tanfoglio (EAA Witness) came with a SS guide rod, its a cz clone and runs 300 dollars new. If CZ put SS rods in all new guns I doubt many of us would opt to accessorize with the plastic ones instead. Consider how many CZ owners run the DPM recoil reducers, instead of either CZ product, and the value of that SS rod. Be well
