The Pachymar Jordon Troopers were available in hard plastic, and sometimes you can find them on the auction sites, but they usually go for far more than their true value. The best option, if you can live with walnut grips, are a real set of Herrett's Jordon Troopers or Shooting Star custom made to fit your hand. Send Herrett a tracing of your hand and they will make a set just for you.
Here are some of my carry pieces with Herrett's on them:
Here's my favorite piece with Herrett's Shooting Stars, and a Andrew's carjacker holster:
Here's a set of Shooting Stars by themselves:
The most noticeable difference between Shooting Stars and Jordon Troopers, is that the Shooting Stars look as though have the speedloader cut out on both sides. However, you must always specifiy if you want the grips cut for speedloaders- if not, they will not work with them.