Time to salivate again - it seems that someone in China manufactured a Magpul Masada / Bushmaster ACR AEG clone. Of course, Magpul took legal action when it found out. But, it seems that Magpul PTS is closer to releasing a AEG version of the Masada / ACR.
http://popularairsoft.com/news/infringe ... pts-masada
pics of the clone product
http://www.airsoft-news.eu/e107_plugins ... sada%20AEG