N17BN Reptile XP features:

• Gen 5 Factory bullnose profile for use with bullnose contoured compensators and accessories
• Optic milling to directly mount the Trijicon RMR/Holosun 507C
• Top ports designed to facilitate our N17 Gen 5 ported barrel for Gen 5 applications.
• Ridged top carapace features for press check ergonomics
• Signature 3D machined Reptile side ports integrated with aggressive forward serrations for slide manipulation
• Deeper, Piranha style rear serrations underneath optic cut for pinch racking 
• Multifaceted contoured front and rear corners
• Compatible for 9mm applications

Norsso standard slide for Glock 17 features:

• Machined from solid 17-4 Precipitation Hardened Stainless Steel billet then heat treated to an H900 designation
• Complimentary channel liner installed, slide ships ready for internals and optic installation
• Stripped slide only; sights, optic, internals, RMR cover or other accessories shown are not included with purchase