VFC VR16 Fighter Carbine MK2 AEG comes with full metal body and high quality VR16 engravings. Extendable QRS stock allows you to adjust the length of rifle to fit your body! Comes with a 120 round Mid capacity magazine. Metal flash hider will allow you to fit a suppressor on top and can be screwed off for installation of a 14mm clockwise threaded silencer, just like the Marui M4A1. Dust cover can be flipped open to reveal hop-up adjuster.
It has a quad rail system with with a monolithic top rail, ample room for all sorts of sights and accessories. In the real steel world, this makes things much easier when it comes to stabilising yourself after each and every shot but in the airsoft world, it's for aesthetics. It also depends on how you like to hold your AEG.