Lakeline Ported Barrel for the 9mm Taurus G3X, G3C, G2C, G2S and PT111 G2. Constructed of 416R stainless steel Target grade, precision Cut Rifling, 1 : 10 twist 3.53 inch barrel length with SAAMI specification chamber 11 degree Target Crown Engineered and Made in the U.S.A. Reduces muzzle flip for faster follow up shots. These are just a joy to shoot and they add just a tiny bit of length, about 1/4", to the pistol. Minor fitting may be required. See the installation instructions. FINISHES. Metal parts that rub together or make contact with other metal parts will get visibly marked, scratched, or burnished. Even very hard finishes, like the black nitride and gold TiN finishes we use will wear and that will be visible. Stainless parts will also get scratched, burnished, and show where they rub and touch other parts. This is normal and is not a defect. We have seen that when we replace a barrel in one of our pistols, the new barrel seems to show the same sort of wear pattern as the barrel we removed. If this doesn't work for you, don't purchase it. WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.