I've spent six years in the United States Army. Of those six years I've carried a sidearm for approximately two years. The first nine months I carried a Fobus hip holster that I liked a lot. The problem was that it wasn't conducive to putting on body armor quickly. I spent some time browsing the internet before I deployed again and read a lot of reviews for a lot of different holsters. All of the positive comments that I read kept coming back to the Blackhawk Serpa drop leg holster. I ordered a drop leg holster for myself and I can say that I have not been disappointed.
The holster was relatively easy to put together (just make sure you have a Gerber handy if you purchased accessory pouches) and when I put it on it adjusted nicely to the contour of my leg. I spent about fifteen minutes trying to get my (unloaded) sidearm out of the holster without pressing the Serpa lock and determined that, unless I lose my entire leg, my sidearm is staying right where it should be; in my holster.
The first time that I had to leave my base I watched as everyone else unclipped their holsters and re-attached them to their ballistic vests. By the time they finished "accessorizing" their sidearms I had my body armor on and I was ready to go. The Serpa drop leg is simple, reliable, and comfortable.
The only downside that I've found is that, especially with two magazine pouches, it will really put a strain on your belt. A sturdier belt might not be a bad investment or really cinching the belt that you have now down. Finally, because it can slip, it may rub against your leg. It hasn't been detrimental but it can be annoying if you're on an hour or two patrol.
In conclusion, the Serpa drop leg is an excellent holster that I would strongly recommend to any service member getting ready to deploy. Spend the money because you won't regret it.
Pros: Serpa lock keeps pistol right where it should be; in your holster, two additional platforms to mount accessory pouches, fully adjustable and comfortable straps
Cons: a lot of weight on your pants, unless very tight it rubs against your leg
This review was written in the old system and had content requirements that are different than reviews written today.