SIG Sauer 556 airsoft machine gun</li Auto-electric gun (AEG) Two 300-rd magazines</li Full-/semi-auto Front & rear sights Weaver/Picatinny rail on receiver & under barrel Adjustable buttstock Adjustable Hop-Up Metal gears & gearbox 33.4" long (36.61" w/extended buttstock 8.2 lbs.