An interesting development reference our department issued Safariland 7378 7TS- A detective in my squad carries an issued Gen 4 G27 and got his 7378 issued the other day. I add that his holster is the correct (short) model for the G27, as my department issues both G23s and G27s along with the corresponding 7378.
First thing this morning he tells me, is that he thinks that the holster sucks!
He tells me that he can't get the pistol in or out of the holster w/o effort.. I take a look and quickly realize that in fact the G27 is difficult to seat and remove from the holster! Very difficult.. I then tried his G27 in my holster (for the G23) and I experienced the same issue. Same goes with my partner's holster (also for a G23...), even though both accommodate our G23s perfectly.
A close inspection reveals that the G27 appeared to be catching on the holster along the front bottom edge of the trigger guard. We then tried both 23s in his holster, and although they could not lock in, both fit the holster fine!
What is apparent is that his holster is in spec but his G27 may not be. To the naked eye, his pistol appears fine, but it is apparently thicker or fatter in the area of the front edge of the trigger guard. I find this easy to accept, as the frame is a mold and variations in frame dimensions (albeit small variations...) must exist.
I'll compare frames with a micrometer and update my findings tomorrow.
The department range and armorer staff have been notified and will be examining the pistol and holster tomorrow also.