Photo above is a screenshot of Jonathan Higgs of Airsoftology firing off the real steel IWA TAR-21 bullpup rival during the SHOT Show 2013 and they fell in love with it and thus here's their video covering the Elite Force Tavor TAR-21 AEG Pro Version which they can use for airsoft games. He's impressed the airsoft version too and its compatibility to a lot of M4 magazines and its compactness due to its bullpup design.