GLOCK Field Knife with Saw FM81: Green A tough No-nonsense Durable Field Knife with a Saw intended for hard work. The scabbard is made from the same Tough Polymer that the Glock Firearms are made from. Drain Hole at Base of Scabbard . Solid Retention Clip that can be opened with one hand. Blade is phosphate coated to prevent rust. Scabbard includes a hook that allows it to be firmly attached to Gear, MOLLE or Web Belts.