I received my holster and it doesn't fit my firearm

Every holster that leaves our shop is test fit on the real firearm that you place your order for. This alleviates almost all issues for ill fitting holsters. 

Be sure to adjust the retention screw(s) (n/a to apollo model) and if that does not fix the problem please contact customer service. 

This should go without saying, but it happens far too often:

Please make sure the firearm and weapon mounted light you chose for your order matches the firearm and light you own.