The Taylor Freelance magazine base pad for the HK P30 pistol is constructed of aircraft aluminum with a black anodized finish. The basepad adds 5 rounds to the HK P30 40 S&W and 9mm magazine. This is a tremendous improvement over the factory standard 13 or 15 rounds. It also works on the HK P2000, where it provides 4 additional rounds. The Border Special ships with a custom 140mm spring. When using the standard spring, the slide will not lock back consistently. FeaturesExtended capacityAnti-vibration locking screwsStainless steel locking plate, extra strong, extra thing (to fit the HK P30 frame)