The XS Sight Systems R3D Night Pistol Sights for the Springfield XDS will not fit the XDS OSP model. There is a set of XS Sight Systems R3D Night Pistol Sights for the OSP XDS. Those sights can be found at the link below.
https://www.opticsplanet.com/xs-sight-systems-r3d-night-sights-for-springfield.html?_iv_parent-gun-make=springfield-armory
Yes, the XS Sight Systems R3D Night Pistol Sights can fit a Springfield XDs Mod 2. You will need either model number SI-R015P-6N or SI-R015P-6G.
These particular XS Sight Systems R3D Night Pistol Sights will not fit a Walther PDP. However, XS Sights do make a set that is compatible with the Walther PDP that we unfortunately do not carry. We do carry some options from AmeriGlo that you can find using the following link:
https://www.opticsplanet.com/s/walther-pdp?_iv_categories=tritium-fiber-optic-night-sights&_iv_parent-gun-make=walther
The sight is .495 in length.
Yes. The XS Sight Systems R3D Night Pistol Sights will fit your M&P Shield Plus. You can use MPN:SW-R033S-6N (Orange), or MPN:SW-R033S-6G (Green).
The Sig/Springfield set will fit the Hellcat, but not he Hellcat OSP.
No, the EZ models use a different footprint.