That crap is manufactured by NATEC, Inc., located in Plattsburgh, New York.
They call it PCA for polymer cased ammunition.
Around 1999 they tried to sell that stuff to the military...
.223 REM, 55 grain FMJBT
.223 REM, 55 grain Sierra Blitzking
.223 REM, 69 grain Sierra Matchking HPBT.
They had "intentions" of also making the following:
.308, 150 grain FMJBT
.308, 150 grain Sierra Gameking
.308, 168 grain Sierra Matchking
Case colors were, beige, blue, green, white and black depending on which bullet was loaded.