Loaded PSA upper with FN CHF midlength barrel made from their proprietary machine gun steel, PSA premium phosphate BCG and DDM4 15” rail and A2 flash hider. It retains the factory pinned gas block, which was chopped and reprofiled by Adco.
This upper has over $1000 in it if you look up the parts. DD rail is over $400, the uppers are $420 or something on clearance without a BCG. The BCG is $100. And that’s without the gas block cut/reprofile and rail installation. Only 500 rounds down the tube.