Not a bad deal. It isn't exactly an M4 style. It looks like an Israeli clone. CAR stock, A1 upper receiver, M4 barrel and handguards, and innertube sections on grip, etc. several people built these up as parts guns. It's not a bad configuration as long as you want to keep things simple and don't want to run optics or overload it with crap. I like them as a KISS platform.
It is an A1 upper receiver, with a Stag Arms lower.
I believe the upper receiver has CAR internals (maybe?)
The barrel is 1/7, and I am sorry about the 'high capacity" comment - I guess my mindset was in the frame of mind that if Obama gets his way 10rounds will be the norm [:
- they have Magpul springs/ loading systems inside the standard mags, don't know much about this either - learning as I go, safely...
Either way, I just ordered a rail system for it, don't know much about rails that attach to standard handgaurds, but it should mount up I assume to the foregrip I have for it!
Looking forward to putting 400 rounds through it next weekend!