All compound bows like Barnett XP 380 have cable slides. It usually comes with the package when you buy your bow. However, there are still those that do not have a cable slide included when purchased. It mostly depends on where you bought your bow. Most of the time, there is only a plastic insert that contracts the rail of your bow if it does not include a cable slide. The cables ride on these rails, and it needs an ample amount of lube or wax to function. Some bows have a Teflon sleeve that the cable slides ride against when used. It lays flat on the sleeve across the outside of the rail. This area also needs to be regularly waxed well to function correctly.