Perfect accessory, eases magazine changes Precision machined brass adds weight to cut recoil Direct fit with no modifications necessary The Speed Feed Pro has an optimized feed ramp angle for reduced ''Speed Reload'' split times. Precision CNC machined for a perfect fit with no added print signature for EDC. Eliminate debris from entering into your pistol through the frame cavity. Significant added weight to reduce felt recoil for competitive shooters and training professionals. Approved for use within the USPSA by the Rules Committee.