The ONLY P320 MOD you need

Grip Module: https://www.icarusprecision.com

Thumb Ledge: https://www.aligntactical.com

Slide: https://killer-innovations.com

Apex Trigger: https://www.apextactical.com/forward-set-trigger-kit-for-sig-p320

Sights: https://www.nightfision.com/