Well, as you stated, The Covert was not done by us at Rohrbaugh but rather by a dealer who purchased regular standard R9 pistols and had them redone by Wilson Combat. The Rohrbaugh made Special Forces R9 Pistols were the only all black pistols ever made by the designer, that being Rohrbaugh itself. The difference would be that while our standard R9s were nice, when we built the Special Forces R9s, like any of our special runs, we hand picked the best frames, slides, barrels, etc. so they were even better than our "regular run" pistols. Extra time was put into making them. The other obvious thing is the deep engraving of the word "Covert" on the slide. The Coverts started out as regular run R9s, so that "extra sauce" was done by Wilson and not at the factory. Not bad overall to collectors I would assume, however, be it known that they were never our gun but an "aftermarket treatment' on a "Standard" R9 pistol. We were originally paid by this particular dealer for warranty work, even if the problem was due to the work done by the other company and not by us. As time went on, payment for warranty work by that particular dealer ceased, but we continued to repair, at no cost to the pistol owner, any issue he or she had with their Covert model. Of course, we were not responsible for that, being that the work was not done by us at the factory, but by someone we had no control over as pertaining to QC, but being the pistol was originally ours, we eventually just did the work and straightened out any troublesome Covert, even though they were not factory built Rohrbaughs, per se, at that point, but rather a customized version of a Standard R9. It was, however, best for the marketing issue at that point to correct anything on the pistols. Not many came back for warranty in the long run, although, initially, there were a few more than we had liked early on. It seems Wilson got better at working on the R9s as time went along, which showed in less Covert returns, which made both we folks at the factory and the gun owner happier.