Optimized feed ramp angle for reduced Speed Reload split times. Precision CNC Machined for a perfect fit. 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 Speed Feed Pro Brass Model. Approved for use within the USPSA by the Rules Committee. G17-Compatible with all Gen5 Full size GLOCK Frames- G17 G17L G22 G24 G31 G34 G35 G45 G47 G19x sized frames weight 2.6 oz