As the title says, this is a Blackhawk Serpa holster. It's a level 2 retention holster. In the picture it is mounted to a duty belt jacket loop to carry out and down from a jacket. The rest is a thigh platform which will take a holster and two accessories, a standard belt loop, and a paddle. The holster attaches to each piece using only three screws so it's very quick to change between carry options. I'm asking $100 for the entire Serpa setup. The leather holster is also for sale in another ad, though the Glock is not.