This is what I did:
I used a 2 inch wide belt (Amazon)with Velcro on the inside. (Couldn’t find one to match the material of WS belt.) Makes adjustment easy and allows me to put a couple pieces of hook side of Velcro on the pants or jacket to keep the belt up if I don’t use modified belt loops.
I molded and cast the Yari knives as per Edge’s post , then machined an aluminum block to hold them, handles on opposite sides, and screwed it to the back center of the belt.
The grenade rounds are from a mold of a real 40mm training grenade. Mine are different enough from real to be apparent on close inspection. They are held by a piece of nylon belt formed in a cylinder and riveted to the belt.
Pouches are a resin casts of an original that I made from ren board ( a resin prototyping material) and screwed from behind through the belt. Haven’t done the buttons for them yet. And they are all the same, not a left and right as in the movie. (I don’t want to use anymore ren board than I have to).
Buckle is a compromise. I machined the part that has the angled strap for holster but kept the latching mechanism. Machining a whole buckle screen accurate would have been a chore.
Holster hangs from the belt. I added a clip at the holster to belt buckle strap so I could get it on and off easily.
Compromised on the belt material, buckle, holster strap, and one type pouch.
Any input?