"And it has to do with having no inventory or stockpiles on the shelf, but items arrive as you need to build your product. What that means is that it's much more difficult to actually find stockpiles of already built weapons"

This quote by Mitchell Reiss is referring to the concept of Just-in-Time (JIT) stock management. JIT is a system of inventory management where products are just ordered and provided when they are required for production. This implies that there is no need to save large quantities of stock or stockpiles of products on the rack. Rather, items are purchased and provided as they are needed for production. This system is advantageous for businesses as it minimizes the need for large quantities of storage area and lowers the threat of having excess stock that might not be utilized. However, it can be challenging to find stockpiles of already developed weapons when utilizing JIT inventory management as the items are just ordered and provided when they are needed.