And then THIS happens!
http://www.canadianfirearmcentral.ca...ull=1#post3254
So anyone trying to build a C8IUR CANSOFCOM or UKSF variants, this is the one! The only difference I've been able to discern so far is that the UK variants retained the Grenade Launcher Lug whereas CANSOFCOM's version has it removed.
c8%20sas.jpg
(this image has the largest resolution for anyone wanting to see it in somewhat better detail)
sas1.jpg sas2.jpg sas3.jpg
Obviously they're RS uppers and kinda pricy. At the very least though, these are some of the best reference images we've seen yet! I'm sure more will appear when the pre-orders start shipping.