Hmm, first time I heard this, about Real sword making a unique AEG system for their M4/M16 (Not shape, but function)
Old news:
RS Making Magna (WA) GBBR w/ Forge T-7075 Aluminum
RS Making AEG w/ Forge T-7075 Aluminum
New news (correct me if I'm wrong)
YouTube - Redwolf Airsoft - IWA 2011 Real Sword Booth
YouTube - AATV @ IWA 2011: Real Sword
However, apparently the 'bolt' actually can be pulled. For those wonder why there's the odd stuff in front, that's the hopup chamber (Looks exactly like a Escort system)
nvm, apparently I skipped AATV's video on the RS Shoot me