Disclaimer - this barrel DOES NOT fit the standard GX4. Lakeline threaded target barrel for the 9mm Taurus GX4 Carry. Thread protector cap is sold separately. Constructed of 416R stainless steel Target grade, precision Cut Rifling, 1 : 10 twist 4.38 inch barrel length with SAAMI specification chamber 1/2 x 28 threads Engineered and Made in the U.S.A. Barrel only. Thread protector sold separately. Minor fitting may be required. See the installation instructions. Threaded barrels will not be sold in: California Connecticut Delaware Washington New York District of Columbia 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.