The ZEVTECH G17 SilencerCo. RMR Model Aluminum Slide Set is made out of CNC aluminium and is a little lighter than the original version. This will allow your Tokyo Marui Model 18C to feel a lot snappier while shooting which is a great bonus. It also comes with a steel outer barrel increasing its durability. It also comes with the outer barrel and a slot to fit a RMR sight at the rear. The slide has a very grainy texture which gives it a different yet appealing look.