You should be able to find someone with a Green one they would let loose of but the older 80's brown or cream colored ones are like gold to many. Mine are all gone but still have one 80's Reacher Phil filed down for me that is a prize and still kills ducks next to my Ducklanders.
That green cut down magnum was a serious call if you got a good one and if it is not a good running call there are people around that might hook you up with an old reed and wedge. The green ones went for about $25 new but could get into the big dollars and the older ones can get into the several hundred peso's on occasion. Those old DC cut downs were and still are pure duck killers.
Good luck, Rock