"First of all, don't take every detail of a review as fact: Cons can come from personal error or manufacturing error, and pros can come from personal experience as well. I've had this gun for 1/2 a year now and it is outstanding overall. I will give a list of pros and cons, as well as some tips:
Long rail system, perfect for if you want to rewire to a peq box battery holder, or just want to keep flashlights out of the way of your hand.
Long barrel, doesn't improve range too much since it is an airsoft gun, but definitly gives it a decent range.
Great stock internals, keeps the fps at a rate where it is not too high for cqb, but high enough to pack a punch.
The Nylon-Fiber construction is very well done, and keeps this rifle light to compensate for its length.
Very good rate of fire even with a 9.6v 1600mA battery.
Included scope is high quality.
Overall, looks amazing.
Just a note, but more to the side of being bad: The stock magazine does wobble a bit more than standard magazines, but it is not too bad, at least in my experience.
Battery spacer (the piece of plastic in the stock that prevents battery wobble) can prevent changing the stock to shortest setting, fix for that below.
Orange tip is harder to remove than most.
Stock is very tight to buffer tube, which is good when you want the stock on but makes it harder to take the stock off and put it back on, but not a major issue. I want to clarify that it is loose enough to easily change stock positions, only touble is removing stock.
Battery spacer: Take the spacer out, and wrap 5 layers of electrical tape around the battery.
Removing rail system and barrel completely, to be able to put on a new railsystem or barrel: People everywhere say it is impossible on this gun. That is false, this gun does have a delta ring it is just hidden well. You should be fine using standard barrels or rail systems on this gun once removed. Unscrew both hex screws on the rail system, and pull off, then unscrew both screws in the outer barrel and pull that off. Use a flashlight if you need to, and look into the circular gap. See the tan (Or black) piece with 4 notches around it? That, my friends, is the delta ring this gun supposedly doesn't have. Uncrew it like a normal d-ring, either with a d-ring tool or just 2 small screwdrivers. The rest is self-explanatory.
Overall, this gun is amazing for beginners and pro's alike, since it is fully upgradable, and is the middle ground between long range and cqb. If you are looking for a low-budget airsoft gun, definitly get a combat machine. Plus, you get any item you want under 37 bucks (If I remember right) for free! Also, a word to beginners: $190 seems like a lot, but don't make the mistake of buying an AEG for under $130. You will end up spending a lot more than that by buying cheap plastic guns that are not good for anything :D I probably spent $160 just buying crappy guns before i bought this. Also sorry for long review.
"I have owned this gun for nearly a year. In that time I have been through dozens of airsoft skirmishes with this weapon. Overall I have not been disappointed at all with it. It has seen me through many battles and has got its share of takedowns.
Pros of the gun
High rate of fire
Accurate to a reasonable distance (iv hit people at about 90-120 feet away)
Looks great my friends and I all love how the rail looks especially
Hardy I threw this thing into a manure spreader then jumped onto it during one war out one round through to clear the barrel and whacked a guy with the next.
Well put together(still probably under Hardy) in my near year of ownership only one screw on the tale came loose. All it took was one half turn to tighten down.
Low enough fps for indoor fields (could be a con)
The only cons that can come up is that the rifle is a little slow in fps for outdoor wars people have time to get out of the way on some long shots.
The red dot is difficult to sight in when I adjust elevation sometimes the left and right moves in the gun as well(could just be a bad optic on mine)
Sometimes the gun has difficulty feeding on full auto with some magazines and can have some difficulty with the mag it came with however it isn't very often at all a little tape on the back of the mag fixes it quite handily.
Overall this gun is amazing for indoors and is adequate easily for outdoors. If you will be using it outside a lot I might recommend either a higher fps g&g or a heavier spring in the gun say an m120
Overall I love my gun and have yet to be truly disappointed.