The Rival Arms RA20G201E Precision V1 Drop-In Barrel for Glock 19 Gen3-4 delivers unmatched precision with a 4.02" 9mm Luger match-grade barrel crafted from 416R stainless steel and finished in a durable gold PVD coat. This CNC-machined billet barrel combines a 1:10 twist with a six-groove rifling pattern to optimize accuracy and reduce standard deviations shot after shot. The low-temperature vacuum PVD coating provides a resilient barrier against wear in demanding conditions, while the BORSLICK Boron Nitride DCD inner bore treatment resists heat and carbon buildup for consistent performance during high-round counts. A target crowned muzzle enhances muzzle control and consistency, and each unit is individually hand inspected for accuracy to ensure dependable results. The Precision V1 is a true drop-in upgrade with no gunsmith required, and Rival Arms backs it with a limited lifetime warranty. All threaded barrels include a color-matching thread protector for a clean, integrated look when paired with compatible components. Ideal for shooters seeking enhanced reliability, faster follow-up shots, and improved precision in competition or duty use.