Use this True Precision Glock 19 Threaded Barrel, 1/2x28 to replace your original barrel to gain a durable, cold-rolled steel tube that will deliver enhanced performance and even longer service life. True Precision built these Pistol Barrels from certified US sourced 416R stainless steel with a broach-cut rifling process that ensures both peak accuracy and reliability with every shot. This True Precision Glock 19 Threaded Barrel, 1/2x28 is designed for all ammo types including cast lead, and they are SAAMI spec chambered. All threaded barrels included with this kit have a 1/2x28" thread protector with tension lock system and integral Vitton high-heat oring that ensures this barrel serves you for years to come. These barrels provide an attractive aesthetic boost to your firearm that doesn't negatively impact its function, and they are heat treated to 42-44 HRC which is sufficient enough to prevent damage without affecting the barrel's durability. Enhance the aesthetics and utility of your weapon with this True Precision Glock 19 Threaded Barrel, 1/2x28 for Glock 19 (L/M/L/M/L/19) w/ Thread Protector. Specifications for True Precision Glock 19 Threaded Barrel, 1/2x28: Manufacturer: True Precision Finish: PVD Fabric/Material: 416R Stainless Steel Barrel Length: 4.5 in Threads per Inch: 1/2x28 Barrel Twist Rate: 1-10 Cartridge: 9mm Luger Barrel Material: 416R Stainless Steel Gun Make: Glock Gun Model: Glock 19, Glock 45, Glock 19X Model Generation: 5, 4, 3, 2, 1 Additional Features: 11* Competition Muzzle Crown Included Accessories: Standard Condition: New Rifling Profile: 6 Groove Rifling Features of True Precision Glock 19 Threaded Barrel, 1/2x28: Easy to install drop-in design; Fits the Glock 19, 19X, and Model 45 (9mm) pistols in Gen 1-5; Threaded barrel length is 4.50" overall (without thread protector attached); Advanced proprietary broach cut design specifically engineered for increased accuracy potential; Broach cut 6 groove rifling allows for all ammo types to be used safely, including cast lead; 100% manufactured with certified 416R stainless steel; 9mm 1/10RH twist rifling; Fully supported SAAMI spec chamber; Improved overall fit from OEM with added chamfers, improved radius cuts, and other additions for a better than OEM barrel; Lifetime performance warranty for function Package Contents: True Precision Glock 19 Threaded Barrel, 1/2x28 Viton high heat integral O-ring lock thread protector