The whole concept of "paracord" stems from the rolls of parachute "riser" or shroud line that sits in the shop where military parachute riggers repair chutes. It is OD green, has a woven nylon outer sheath with seven white nylon inner strands and a tensile strength of 550 lbs. It is found in the supply room of almost every military unit in DOD because it has a million uses. As it's popularity increased, many rope manufacturing firms began to make "pseudo-paracord". Some of this stuff is very close to the MILSPEC stuff, some is not, but it still sells. The real stuff is the best, it has a MILSPEC number and a National Stock Number on the spool. The fake stuff does not. The fake stuff still works pretty well. Just because someone tries to tell you it is "real" paracord, it may not be without the MILSPEC or NSN mentioned. I'm not saying to only buy the real thing, just be forwarned that all "paracord" is not military grade.
Bruce