While Arlington doesn't usually deal in plastic machinery parts, screws and barrels are one of the exceptions. Many times when a customer cannot use the existing screw, we make a new one for them and, in turn, have a screw to sell to someone else. It's a win for the customer to get extrusion screw that they need and a win for our future customers since we have something to offer them. Our sizes and configurations change often so check back to see what we have available. While we don't run into barrels as often, they are something we occasionally have in stock too.