Xds mod2 osp

This gun is not a XDS but if you’re referring to this…….

I honestly don’t know and since it has no negative impact on how the gun shoots or performs I don’t care.
My suggestion……
Want to know more call Springfield Customer Service.
Hmmmm I don’t think so.
Although the small round holes are there to remove the roll pin the small square hole on the very back of the backstrap does nothing to facilitate the backstrap change.
That hole does have a perfectly legitimate function, It's a dust, dirt and grime collector for the backstrap, heaven forbid that gunk ends up on the palm of your hand. 😜