VFC VR16 Fighter CQB MK2 AEG come with full metal body and high quality VR16 engravings. Extendable QRS stock allows you to adjsut the length of rifle to fits 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. Metal flash hider can be screwed off for installation of a 14mm clockwise threaded silencer.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 stabilizing 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. ; Full Metal Body Standard Adjustable Hop-Up Rear Wired Battery Connector (Small Tamiya TYPE) Spring Type Mid-Cap Magazine 120 Rounds Capacity (no winding necessary)