Product Description The Rosco Manufacturing Bloodline Threaded Barrel is a match-grade, drop-in upgrade designed specifically for Glock 19 pistols, compatible with Generations 1 through 4. Crafted from premium 416R stainless steel, each barrel is broached, honed, polished, and finished with a durable Melonite nitride black treatment for exceptional corrosion resistance and long-term performance. The 4.6-inch threaded barrel features a 1/2x28 thread pitch, making it ready for use with a suppressor or muzzle device right out of the box. Rated for use with SAAMI-approved, factory new 9MM ammunition, this barrel delivers improved accuracy and consistency over a standard stock Glock barrel. While the installation is a user-friendly drop-in swap, Rosco Manufacturing recommends consulting a local gunsmith if any questions arise during the process. Product Highlights Drop-In Match-Grade Fit: Designed as a direct replacement for Glock 19 Gen 1-4 barrels with no gunsmithing required for most installations. Premium 416R Stainless Steel Construction: Broached, honed, and polished for superior accuracy and durability over standard barrels. Melonite Nitride Black Finish: Provides outstanding corrosion and wear resistance while maintaining a sleek, tactical black appearance. Threaded 1/2x28 Muzzle: Ready to accept suppressors, muzzle brakes, or other compatible muzzle devices straight from the box. 1:10 Twist Rate: Optimized rifling twist for consistent 9MM bullet stabilization and enhanced downrange accuracy. Specs Brand: Rosco Manufacturing Caliber: 9MM Overall Length: 4.6 inches Thread Pitch: 1/2x28 Twist Rate: 1:10 Material: 416R Stainless Steel Finish: Melonite, Nitride Black Compatible With: Glock 19, Generations 1-4 Ammunition Rating: SAAMI-approved, factory new ammunition MPN: BL-G19-9MM-M-TB UPC: 181969500203 Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer. ]]>