Sig 229 to 229R slide interchangeable?

[teejhot.40cal]

I have two .40 Cal Sigs. One 229 and the other a 229R DAK. Does anyone know if the slides are interchangeable. The reason I ask is because one has nights on it and the other doesn't. They seem to fit each other but I want to make sure that I am not missing anything.

 

[noonesshowmonkey]

There are two major points of fit involved here: headspace and the locking block (which influences headspace). A .40 P-series should have a common locking block and common slide dimensions across all series.

You should be able to swap them, no problem.

Go forth.