The BP-A-.500-X (eXtended) alloy 1911 magazine basepad is a taller version of our standard .500 basepad. It has additional material on the bottom to facilitate positive insertion when using a deep magwell. Can be used with any Tripp magazines that use .500 basepads, such as 8R-45-RG, 9R-10MM-RG, 9R-40SW-RG, 10R-38S-RG, 10R-9MM-RG.
