Yankee Hill Machine Half Inch Mini Riser .75 Inch Long. Fit any picatinny rail. Elevates your accessories by 1/2 inch. Made from aircraft quality aluminum and hardcoated. Specifications for Yankee Hill Machine Half Inch Mini Riser .75 Inch Long YHM-9490: Mfg Item Num: YHM-9490 Type: SIGHTS/OPTICS - BASES/MOUNTS - AR STYLE AR-15 Parts: AR-15 Parts Desc.: .75 Inches Long Master Model Header: Half Inch Riser The Yankee Hill Machine Half Inch Mini Riser .75 Inch Long YHM-9490 is a quality addition to the Yankee Hill Machine lineup. For more great deals on Picatinny Rails by Yankee Hill Machine please browse our Yankee Hill Machine Gun Parts page.