E&L Airsoft, whilst famous for the AK AEG series, also have an M4 series. Highlander Airsoft checks out the E&L M4 "Diamond Series" Custom Carbine AEG in this video. Review is done in German... "Hey guys here you can see the review of the new E&L M4 MUR Custom Carbine 'Diamond Series'. I hope you like the video and if you have any questions in the comments. Thanks again to Begadi, who made this airsoft available to me."