This is a do-it-yourself adapter that mounts to Picatinny rails. It allows you to add a Picatinny rail mount to any object of your desire. For example, you can glue it to a small digital video recorder (DVR) to make the DVR mountable on an airsoft gun or a paintball marker. You will also need a M5x25mm screw and a M5 nut to fasten this mount to a Picatinny accessory rail. The screw and nut are not included, but can be easily sourced from your local hardware store (e.g. Home Depot, Lowes, etc.). This adapter is designed to Picatinny and NATO accessory rail specifications. Therefore, it may be incompatible with some Weaver rails. We now have another DIY adapter that works great with Weaver rails: https://www.shapeways.com/model/3016419/diy-weaver-mount.html?li=shop-results&materialId=75 Airsoft equipment and accessories used for illustration of this adapter are not included. WARNING: Although you can use this mount adapter on your real firearm, we have never tested it with real firearms before. We do not know if the firearm recoil will or will not damage it or the object you will fasten to it. Use it with real firearms at your own risk. This design made available via Creative Commons - Attribution - Share Alike license here: https://www.thingiverse.com/thing:88950