Depends on what brand of holster. Ones like Unlce Mikes brand will fit a lot of different brands of guns. Other more expensive holsters will mold the holsters so only one particular brand will fit, thus making a much better fitting holster.What glock number and .45 XD compact use the same holster? I see ads that read the holster fits glock or XD.
Or not.Most full frame glocks would fall into the same catagory as the full size XD45. G17, G20, G21, G22, G31, & G37. All should fit a multi-use large frame polymer gun holster.