ASG - INFINITY CNC Motor U-18000 Black - Short Shaft is a brand new motor from ASG which is part of their INFINITY CNC Range which are built to be the best they can possibly be at a great price. The motors are constructed from Alloy, with lots of the parts being CNC machined from Aluminium and Steel, such as the Aluminium Front and Back Covers, Steel Pinion Gear and Shaft. The motor features strong neodynium and a precision built motor housing. Each motor in the range features a high efficiency due to their excellent design, generating less heat and reducing power consumption, and less Amperage. The great part about this series of motors is that if you need to fine tune the power of the gearbox you can easily swop out the motors are they are all exactly the same size, meaning they are easy to quickly repalce and swop to need. These range of motors are a must have for any self respecing Airsoft Techy, and for those who want to tune their weapon to absolute perfection.