So now that it's become evident that the UKSF's new L119A2 appears to be almost identical to the CANSOCOM C8IUR upper, I anticipate some very interesting builds coming out of the UK airsoft crowd. Here's a link to the first (not unlike my initial concept of using a Geissele SMR rail).
https://thereptilehouseblog.com/2016...t-gazs-l119a2/