Brownells Match-Grade P365 Barrel Features The Brownells Match-Grade Barrel for the Sig P365 is machined from hardened 416R stainless steel to precise dimensions giving the pistol a tighter lockup than the factory barrel typically achieves and translating directly into improved accuracy potential. Ahead of the 9mm Luger chamber sits a button-rifled bore with standard 1-10 inch right-hand 6-groove rifling a rifling twist proven to stabilize a wide range of 9mm bullet weights consistently. Installation is designed as a straight drop-in on most guns meaning owners can upgrade their carry pistol s accuracy without a gunsmith visit. The barrel is laser engraved with its chambering and the specific Sig model it fits ensuring the correct part reaches the correct pistol. An extra-hard Black Nitride finish coats the barrel to resist surface wear while stopping corrosion from challenging the stainless steel substrate an important trait for a barrel that may see daily carry in a holster. This barrel is fitted exclusively to the Sig P365 so owners can be confident it is purpose-built rather than a generic aftermarket part. For those who want to add a compensator or suppressor down the road a threaded version with 1/2x28 TPI threads is also offered from the same barrel family. This non-threaded model suits P365 owners focused purely on improving day-to-day accuracy from their everyday carry pistol. Brownells Match-Grade Barrel for Sig P365 Specifications Brand: Brownells Compatible Hosts: Sig Sauer P365 Caliber: 9mm Barrel Style: Non-Threaded Material: Stainless Steel Finish: Black Nitride Twist: 1-10 Available At: GrabAGun