Instruction: Evaluate the answerability of a question by analyzing the related document, outputting yes if the document contains information addressing the question, and no otherwise.

Input:
Question: can i put a rail on top to mount a red dot sight
Document: it shoots pretty hard, but after the battle the gears locked the first time i used it.overall its a pretty good gun
This is a very good gun but the out side materials are mostly plastic. The fps is around 325 (.2gs) which is very good for CQB. The magazine holds around 500 bbs and shoots very well. From time to time its jams but you switch it off, then to full auto, shoot a few, and return it to semi auto. The only metal parts are the barrel and the cover over the battery. The battery life is good and lasts about 4 hours and is consistent.
This is a great gun for pros and starters.I got my gun off of Airsoft mega store because you have better shipping and its a little bit cheaper.This gun is a mixture between very hard plastic and metal.
This gun is literally the best gun I have bought under 100 dollars in the past 20 years it Is an absolute beast on the field and it is amazingly accurate and the fire rate gave me goosebumps. It really gives you more than it is worth and it has a higher fps than labeled
Once i recieve the gun (5 day shipping) ill do a review. I will probably do a video review too if i love it. But i will post a new comment here and tell you all how it is.
Just ordered this morning like 25 minutes ago. I found this product on airsoftmegastore.com (it is cheaper and you get a free mp40 with your purchase there) the product is 121 reviews and it is 41/2 star. So basically it is a five star product and i can't wait. It will work real well with a smart charger ill order one soon. Also use nice bbs i recomend golden ball .20g.
It's a great gun 365 fps that's awesome I changed the gearbox and it now does 400 fps and is breaking
It is a great gun I have had it for a few weeks, but it stalls and you have to switch gears to let it shoot again. It is a over all great gun though.
It has a plastic gearbox not metal like it said it did body isn't metal its bad plastic shoots every were your not aiming.don't buy this!
It has a good grip and feels great when you play with it. 4 of 5 stars.
Answer: no