The Rival Arms Precision Barrel is a 4.02-inch, fluted and threaded drop-in barrel built for the Glock 19 Gen 3-4 in 9mm from Rival Arms (brand part no. RA20G202A). Rifled with a 1:10-inch twist and 6-groove pattern, it’s coated with a low-temperature vacuum PVD finish and treated internally with BORSLICK Boron Nitride DCD to resist wear, heat, and carbon buildup. The 1/2-28 threaded muzzle opens up suppressor and compensator compatibility, and a color-matched thread protector ships with the barrel for when no device is attached. Because it’s a true drop-in replacement, no gunsmithing is required to install it.

Key Specifications

• Chambered in 9mm, sized as a 4.02-inch drop-in replacement for the Glock 19, Gen 3-4.
• Rifled with a 1:10-inch twist and 6-groove rifling.
• Fluted for reduced weight and faster heat dissipation.
• Threaded at 1/2-28 for compatibility with suppressors and compensators.
• Includes a color-matched thread protector for when no muzzle device is installed.
• Finished with a low-temperature vacuum PVD coating for wear and corrosion resistance.
• Bore is treated with BORSLICK Boron Nitride DCD, resisting heat and carbon buildup.
• Features a target-crowned muzzle for consistent accuracy.
• Installs as a drop-in replacement, with no gunsmithing required.
• Finished in black.

Frequently Asked Questions

Does this barrel require gunsmithing to install? No, it’s a drop-in replacement that requires no gunsmithing.

Is a thread protector included? Yes, a color-matched thread protector ships with the barrel for when no muzzle device is attached.

What twist rate does it use? A 1:10-inch twist with 6-groove rifling.

Buy the Rival Arms Precision Barrel

Upgrade your Glock 19 with the Rival Arms Precision Barrel for tighter accuracy and suppressor-ready threading. It ships fast from our Lubbock, Texas gun shop, and our Glock barrels selection has more Glock barrels for your build.