The magpul Moe grip is an awsome grip used by many airsofters because of its comfortably and functionality. The 3D printed version that I have made is press fit on. The grip is very very tight. It is fitted to Daniel Defense Picatinny Rails, so if you have any other rail it may not fit.(If you print it and it fits on another companies rail system please tell me so that I can write it HERE). The grip will take a hammer to get on a rail but its worth it because it feels great and stays on. You may need to sand the part that touches the rail a little to help it ease on. If the plastic has minor cracks after putting it on you are fine. It will stay on. Please enjoy and give me suggestions.Cura slicer 30% infill brim on support on, touching build plate Printed with 1.75mm PLA 195 C I printed it with a Prinrbot metal simple If anyone knows how to add surface texture on solid works please comment and help me.