The Zaffiri Precision match-grade barrel is a drop-in upgrade for the Springfield Armory Hellcat Pro, machined from 416R stainless steel and finished in Stainless (natural). It features a flush-and-crown profile, a polished feed ramp, and an oversized lockup for reliable, repeatable performance. This is a non-threaded barrel. Features 416R stainless steel construction Stainless (natural) finish Flush-and-crown muzzle profile (non-threaded) Polished feed ramp and oversized lockup Stress-relieved and heat-treated; works with lead, plated, or jacketed ammunition Drop-in replacement; made in the USA Specifications Material: 416R stainless steel Finish: Stainless (natural) Length: 3.26 inches Caliber: 9mm Luger Twist rate: 1:10 Hardness: RC 40-42 Muzzle: non-threaded, flush and crown Fits: Springfield Armory Hellcat Pro Springfield Armory and Hellcat are trademarks of Springfield, Inc.; 3CR Tactical is not affiliated with or endorsed by Springfield Armory. Reference is for fitment only.