Received my 2nd Fist holster 6days ago,Fist #1K IWB for Glock27.
The retention was way too tight. Emailed them for suggestions.
Thier same day return email said "send it back we will repair or replace. I received a new holster today -5 day turn around time over the 4th of July Holiday. I call that super service!
Excellent service & a great product. This holster is a ultra thin Kydex IWB clip type. It is #1k on their web site.
I also have one for my S&W 642. Excellent comfort & concealment.