From what I've seen and played with over the years, this is quite unique. Gun has standard fittings outfitted on. I've had this for a while so let me detail the cons and be up front. -Missing 1 screw for the rear iron sights (this is no issue as the one screw is all the way through and tightly secured) -I have lost the rail attachment for the bottom of the handguard....easily replaceable -Charging handle does not open bolt catch The Pros -the gun works! -small tamiya -has been shooting ~320 w/.2 -foldable stock -QD mount on stock -not many upgraded internals(sorry) What you'd get along with it -HiCap mag -Angel Custom Hive suppressor (130mm neg) -An extra inner barrel 440mm in length (as well as the stock length barrel) (suppressor covers the barrel) -LR iron sights -nice lil paracord job on the stock -fun times