Made from 17-4 Stainless Steel, you will feel a difference shooting with this slide. The aesthetic cuts are also functional as it makes holstering easier in and out. Specifications for True Precision Axiom Slide with Optic Cut for Sig P365: Manufacturer: True Precision Gun Model: SIG Sauer P365 Gun Frame Size: Sub-Compact Optic Cut: Shield RMS Fabric/Material: 17-4 Stainless Steel Included Accessories: Optic Cover and Screws Condition: New Features of True Precision Axiom Slide with Optic Cut for Sig P365 100% US Manufactured and Designed slide. This is a fully finished new slide. No need to send in yours. Cut from solid billet 17-4ph Certified Steel. Heat treated to spec. Attractive Side and Top Cut windows. Aggressive reduced & scalloped front. Angled rear serrations. Cut for the Shield RMSc and Sig Romeo ZERO Optics and includes cover plate with screws for use without optics. Package Contents: True Precision Axiom Slide with Optic Cut for Sig P365 Optic Cover and Screws