International Barrels Precision Rimfire 18in 1-16 Twist Fluted Stainless 22LR

The International Barrels 22 Long Rifle 1-16" Twist 18" Spiral Fluted Barrel is designed to enhance accuracy and reliability for Ruger RPR Rimfire platforms, delivering a precise stainless steel barrel that combines rugged strength with elegant contouring to reduce weight without sacrificing rigidity. Engineered as a Ruger Precision Rimfire compatible replacement, this 18" barrel features a 1-16" twist and a fluted profile that aids heat dissipation during extended shooting sessions, while the 1/2-28 muzzle threads offer easy direct install and compatibility with a wide range of muzzle devices. Built to high standards, the stainless finish resists the elements and maintains a clean, corrosion-resistant surface ideal for varmint hunting, target practice, or precision rimfire competitions. The combination of a compatibility-fit design and the performance-oriented fluted contour ensures improved barrel harmonics and consistent shot-to-shot results, helping shooters achieve tighter groups with standard 22 LR ammunition. Whether upgrading an existing Ruger setup or building a dedicated rimfire rifle, this barrel brings precision, durability, and factory-like fit into a single, cohesive package that supports reliable field performance and long-term value.