Sig Sauer P320 X5 Legion Caliber X-Change Kit 9mm Optic-Ready Slide TXG Grip Module

Upgrade and reconfigure your SIG Sauer P320 with the modular Caliber X-Change Kit designed for P320 X5 Legion-style performance. By removing the P320 fire control group (FCU), you can swap to a complete, matched upper and grip setup for a fast, consistent conversion. This kit includes a complete slide assembly with an optic-ready cut, barrel, recoil spring assembly, and grip module, along with magazine(s) for a ready-to-run setup. Built around a competition-oriented 5" barrel and high-visibility fiber optic/adjustable sight system, it’s an excellent choice for shooters who want a turnkey P320 transformation without changing their FCU. Not available for manual-safety configurations.

Product Highlights

• Modular P320 Caliber X-Change system lets you reconfigure your pistol by swapping the FCU into the kit
• Optic-ready slide compatible with ROMEO1PRO-style footprints for fast target acquisition
• TXG tungsten-infused grip module design adds weight where it matters to help reduce muzzle flip
• 5" bull barrel with a recoil system designed for smooth cycling and control
• Dawson Precision-style fiber optic front with adjustable rear sights for competition-ready aiming

Specs

• Brand: Sig Sauer
• Manufacturer Part Number: 8900269
• UPC: 798681632930
• Type: Caliber X-Change / X-Change Kit
• Compatibility: SIG Sauer P320 (requires host P320 FCU)
• Caliber: 9mm Luger
• Barrel Length: 5" (bull barrel)
• Slide: Optic-ready / reflex-optic compatible (ROMEO1PRO optic-ready style)
• Sights: Fiber optic front with adjustable rear
• Grip Module: TXG tungsten-infused (steel/polymer design)
• Color/Finish: Black
• Included Components: Complete slide, barrel, recoil spring assembly, grip module, magazine(s)
• Manual Safety: Not available for manual safety configurations