Barrels feature a fully supported match chambering and are rated for +P. This is a drop in product and will not require any gunsmithing in OEM Sig Slides
Compatibility: P365 3.1″
Material: 416R Stainless Steel
Finish: Stainless
Twist Rate: 1/10
Drop in: Yes
Rifling: Cut rifle broached
Bore Finish: 2-4Ra
Throated and Polished: Yes
Yes Bore concentricity: +/- .0005″