There are two main producers of AEGs that come with simulated blowback and recoil --- Tokyo Marui with their Next Generation Recoil Shock Series (NGRS) and BOLT Airsoft with their Bolt Recoil Shock Series (BRSS). Which one do you think is better? But before you share your thoughts, watch Negative Airsoft discuss about the BRSS in this long video... "This is a very long look at the Bolt B4 but all Bolt AR AEG variants in general."