Been focusing on the holster, it looks a lot like a Safariland SLS with Surefire to me :
But maybe an older model, because most SLS dont have the three screws on the side and don't have the same shape, they look more like this :
I could only find the right model for Beretta or Sig though, so the Tisas must fit in one of these, or they modified one to fit the Tisas.
The other leg has the same safari land platform with a dual pistol mag pouch, by safariland also I believe. They have done something to the straps though, they re-arrange the way they go through the platform, going behind it instead of in front of it like in the pics, put some orange stitches on them, and wrapped some of that blue carbon fiber pattern on the platform too.
I also counted
18 Carabiners on him ( 4 for the suspenders, 8 for the side of the blue armour over the equestrian vest, 4 for the top of the same armour, 2 for the leg armour, one on each leg ) ! No way I'm buying 18 of those, they're not very expensive but that quickly adds up. Bought one of those and going to cast them in resin, they don't need to be functional anyway. Same goes for the cobra buckles, aside from the one for the belt, they others seems useless, so resin it will be. Plus those are expensive.
edit : for the europeans here, no US based shops want to ship the Petzl carabiners overseas for whatever stupid reason again, but this UK based shop does without problem :
http://www.bananafingers.co.uk/petzl-ange-p-1016.html