Yes, it will fit holsters with stock specs.
The True Precision Axiom Slide with Optic Cut for Sig P365 will need the M4x10mm screws for the Holosun 507K.
Yes. The True Precision Axiom Slide with Optic Cut for Sig P365 will fit and function on your SAS model. You will be able to install optics like the Shield RMSc, Sig Romeo Zero, and more.
It does not include the extractor and per True Precision, 'Must use the Original style 365 Extractor. "
Yes, the True Precision Axiom Slide is compatible with any P365 grip module.
The True Precision Axiom Slide is not compatible with P365 .380ACP versions.
Yes. The True Precision Axiom Slide with Optic Cut will be compatible with a frame/module that uses a manual safety.
The True Precision Axiom Slide will accept all the internal parts from your P365 as well as the barrel and recoil spring. Your front sight will transfer over just fine, however, if you have an optic ready model P365, you will need to purchase a different rear sight as this slide does not uses the proprietary Sig Sauer optic cut/rear sight combo.
The True Precision Axiom Slide has the Shield RMSc cut will be compatible with any optic that has the Shield RMSc footprint or Holosun "K" footprint. So, you can fit optics like the Shield RMSc, Sig Romeo Zero Elite, Holosun 407K/507K, and Holosun EPS Carry.
I recommend using the Night Fision Perfect Dot Suppressor Height Night Sight Set at the link below with the True Precision Axiom Slide with Optic Cut for Sig P365.
https://www.opticsplanet.com/night-fision-perfect-dot-suppressor-height-night-sight-set-w-front-square-qttth.html