Sorry to link directly to TOS, but this is the only place I have seen it announced.
And I apologize if this is the wrong section all together.
It seems to be an adjustable gas Upper receiver I think?
There is an article to come supposedly that will explain more.
Im not into the supressor scene as of yet, but maybe some of you can shed some light....
http://www.ar15.com/forums/t_3_124/5...CEMENT___.html
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