Nothing defective re that Colt bipod, the C clip denotes it as an early mid 60s model to match your 601. As for the bipod case I have never seen that model before, does it have any markings? The use of Velcro leads me to believe it's of a later period maybe 70s and possibly not US issue unless it's experimental. Check WillyPs blog for examples/photos of early bipod cases, see if you find one with an open top and long pocket on the front for a three piece cleaning rod made of heavy cotton canvas.