I just picked it up today from my gunsmith. It started out as a CAI build with a crappy sewer pipe of a barrel before being turned into this. The CAI barrel was replaced with a Bulgarian SLR105 barrel. The gas block and FSB off of the SLR was combined into one unit,thr barrel cut,recrowned and threaded for the Tantal brake to bring the length to 16". The pics show original Tantal polymer HGs,PG and a Beryl folder for a more traditional look whlie the other pics show a "Tactical Tantal" with a TDI LHG with light and laser. It still needs some work and a new paint job.