I recently saw this on another forum and thought I would pass it along. The trigger guard lock mechanism is an unsafe design IMHO. A lot of people will say that training can overcome this, but I wouldn't depend on that in high stress situations. This is especially true of any gun without a safety. The pressure exerted to open the lock is transferred to the trigger / trigger guard once the gun is clear of the holster. It's an AD waiting to happen: YouTube - I shot myself! NEGLIGENT DISCHARGES HAPPEN! I have never been a fan of the Serpa. That comes from seeing a Serpa locked up from gravel entering the lock mechanism. That is a poor design IMHO. YouTube - Blackhawk SERPA holster, failures and criticisms. There are much better holsters that don't require lock manipulation with your trigger finger and have locks that aren't prone to failure. If you need that level of retention, check out Safariland and Blade-Tech. I can personally attest to the Safariland. The Blade-Tech holster has rave reviews as well. Now that I am done with my public safety announcement have a good day.