Airsoftjunkiez posted news that the Bullgear CNC Hop-Up For Cybergun M249 Featherweight LMG is now available at their store. This has rigid fixation of the stem in the chamber with the ability to use standard rubber and rollers. Adjusting the hop-up is smooth and it's made of aluminium. They recommend using Prometherus elastic rubber with it.
The licensed FN Herstal M249 Para Lightweight AEG from Cybergun which is made mainly of nylon fibre to make it lighter, is available right now at Airsoft Station... "Provide cover fire for your teammates and rain BBs on your enemies with the new Fn Herstal M249 'Featherweight' LMG Airsoft Rifle from Cybergun. The innovative minds at Cybergun took upon themselves to come up with a high powered LMG that weighs only about 50% of what its’ full metal counterpart weighs.