Here is a good video by Airsoft Megastore of the CYMA CM005 M4 RAS CQB-R II AEG which they recommend for airsoft players looking for an airsoft M4 AEG under US$200.00... "Looking for a new M4, but don't want to spend $200 or more? CYMA has the answer with the surprisingly terrific CM005 Full Metal M4 6in  RAS II CQBR AEG! A durable full metal construction is matched with flip up sights, metal optics rail with riser, metal buffer tube, metal quad railed forend and functional bolt catch.

This beast fires over 435 FPS with .20 BBs and has an incredible hop up that delivers amazing range with the flattest trajectory of any M4 AEG in its' price range! So if you're looking for amazing value and real performance, don't overlook CYMA's CM005 Full Metal M4 6" RAS II CQBER AEG rifle!"