Yes, the Sig P320 X5 uses a standard Sig P-series front sight. You will want to make sure it is tall enough to accommodate the rear sight and or possibly a red dot if you plan on mounting one to the handgun.
Not unless that handgun uses Sig dovetail specifications. Please email us at techsales@opticsplanet.com and we can look into options specifically for that handgun.
Yes, this front sight would work. The standard sights have been replaced with newer Sig X-RAY P-series sights and those can be found here as a set either in a #8 front #8 rear or #8 front and #6 rear depending on which you would need:
https://www.opticsplanet.com/sig-sauer-sox10003.html
MPN:SOX10003
https://www.opticsplanet.com/sig-sauer-sox10007.html
MPN:SOX10007
Yes, this front sight would work. Any standard Sig P-series front sight will work on any P320. The standard sights have been replaced with newer Sig X-RAY sights and those can be found here as a set either in a #8 front #8 rear or #8 front and #6 rear depending on which you would need:
https://www.opticsplanet.com/sig-sauer-sox10003.html
MPN:SOX10003
https://www.opticsplanet.com/sig-sauer-sox10007.html
MPN:SOX10007
Yes, this front sight would work. The standard sights have been replaced with newer Sig X-RAY sights and those can be found here as a set either in a #8 front #8 rear or #8 front and #6 rear depending on which you would need:
https://www.opticsplanet.com/sig-sauer-sox10003.html
MPN:SOX10003
https://www.opticsplanet.com/sig-sauer-sox10007.html
MPN:SOX10007
This sight is 5.60mm / 0.220in tall.
Yes, this will fit the Sig P250.