VIS-1 Monolithic metal upper, authentic markings on the metal receive, ergonomic G27 pistol grip, crane stock (rear wired) and loudener style flashider. The 7 inch effective front end makes this a compact carbine, quite the charming little short barreled rifle. The included flip-up front and rear sights do the job well enough but the enormous top rail, which runs the length of almost the whole weapon, could of course be used to accommodate virtually any optics you can conceivably want to.