No problem. It’s confusing at first glance, but once you read it a few times you will figure out the path that matches your budget. I will say the CarrierComp tube is perfection. Their “DG” cerakote color matches the factory parkerizing perfectly, and their pricing is the best. They recently raised their prices but for 229 you get the tube, follower, and spring. Nobody else touches that price for a titanium tube.