COMPATIBILITY Designed to mount on the side of the Hatsan Jet with S-Roto magazines. INSTALLATION Purchase includes four items: 3D-printed holder with embedded magnets M4 square nut (pre-installed in the holder) 3D-printed Picatinny rail support M4 flat head screw Installation Steps: NOTE: Be careful not to lose the M4 square nut if you fully remove the screw. 1. Choose a mounting location. 2. Insert the M4 screw through the mount, through the desired rail notch, and into the 3D-printed holder. 3. Hand-tighten the assembly until snug. Do not overtighten. DISCLAIMER Purchase includes only the 3D-printed holder and M4 hardware. All other objects in photos are for reference only. Use this product at your own risk. EVOLVE 3D, LLC is not liable for any damage to property or injury while using this product. WARRANTY We offer a limited lifetime warranty on our 3D-printed parts.