Whenever possible, HT will reuse a mold it has versus making a new mold if it can get away with it. This is more common with the weapons because HT used to have a robust modern military line so they already having the tooling done for certain items
Examples
- Hot Toys Dutch. His rifle in the set has a removable carry handle. It's a reuse of a weapon in a HT paratrooper set long ago. But it's not accurate to the film. His pistol in the film is a Desert Eagle. That being said, the pistols aren't easily seen in the film and Dutch never fires it nor brandishes it. The set gave him a Colt 45, was just a rerun of one they've used before.
- Hot Toys John Connor ( regular and Final Battle) reuse the same pistol HT has used over and over again ( IIRC, it's a version of a Sig) but in the film he uses a HK MK23, which does fire in the film
- Hot Toys Platoon Chris Taylor. Same issue with the rifle. His in the set has a removable carry handle with a A2 rear sight. Not accurate to the film nor era HT just molded a new shroud/foregrip to put around the barrel of a rifle they've probably made before.
I know that can be nitpicking a bit here. But as the price points go up for these figures, the expectations for screen accuracy IMHO goes up with it. Everyone is a little different. I can live if the costume or the uniform is a bit off, whereas some people are very hard on that. But I'm pretty hardline about the guns. I want the guns right, that's probably more of a personal glitch on my part.
My best guess is HT added in some weapons from John Wick 1 to avoid making a JW1 figure, since there is marginal difference besides some of the weapons.
I'm surprised some knockoff brand hasn't made a mass produced gear set, but those are often more miss than hit from a sales/profit perspective.
I'm also keeping my eye out on Blitzway's & Prime 1's John Wick they teased in the showcase PT2. 
