I called safariland rep and he wasn't too helpful with the answer I needed.
Here's my question,..

Got a glock 21 SF and upgraded my upper with a LWD 21L "LOVE IT"!!...
I also love my safariland 6325 ALS but not sure which model I need or if I can
use the model for the 17L since the frames are almost the same?
Any thoughts please advise...
Thx

My experience with Glocks and Safariland holsters, specifically the ALS models is a Glock 20/21 cannot be used in a Glock 17/22 holster due to the slide being wider and a hair longer. I'm not familiar with the Lone Wolf 21L slide and don't know if it is the same width as an original 21 or if it is like all the other 9mm, .40, .357, and Glock 41 models.  If it is the latter, then it may work in a 17L holster, otherwise it will be too wide.

My 41 fits perfectly in my 6378, which holds all my 9mm Glocks - 17L, 34, 17, 19, even the 26.



The 21 has a wider slide (unless something has changed that I'm not aware of - my 21 is a non-SF gen 3) and will not fit.