COMPATIBILITY Designed for the Umarex Notos INSTALLATION Purchase includes 5 items: 3D printed holder with embedded magnets, M4 square nut pre-Installed in holder, 3D printed pic rail support, 3D printed cap with embedded magnets, and M4 flat head screw. 1. Select mounting location along pic rail and verify clearance between scope and mount. 2. Install M4 through mount, through the desired notch in the pic rail and into the 3D printed holder. 3. Hand tighten assembly until snug. Do not over torque. DISCLAIMER The purchase includes only the 3D printed parts and M4 hardware. All other objects in photos including the airgun and fill probe are for reference only. USE this product at your own risk. EVOLVE 3D, LLC is not liable for damage to your property or person while using this product. WARRANTY We offer a limited lifetime warranty on our 3D printed parts.