Echo Nine Three turns out some very cool stuff from the gunsmithing side of their operation. Their latest, the Viet-Nine, is a real crowd-pleaser but, unfortunately, it is not something they intend to offer.
This retro 9mm AR-15 build took over 2 years to complete because of how scarce some of the parts are. The mid-length triangular handguards are custom made while the stock and grip are original. The 14.5″ barrel has a permanently attached flash suppressor to bring it to a non-NFA length.
This build is so clean and unique, I had to profile it here.