Watch another Eagle6Airsoft test with an upgraded Marui NGRS and this covers the M4 SOPMOD, one of the earlier M4 NGRS released by the Japanese airsoft company. Airsoft players in the UK and Europe have their Marui NGRS upgraded for better performance at Eagle6... "Richard from our tech team talks about and demonstrates a customer's upgraded TM M4 Sopmod NGRS AEG build."