Analysis of information sources in references of the Wikipedia article "Remington R51" in English language version.
All in all, the pre-production R51 pistols worked very well due to hand finishing, about as well as you would expect for any new design (but it wasn't a "new" design guys). The problem came as the gun went from small pre-production to mass production. There are number of reports from consumers and reviewers about issues with the full production version of the gun, some suggesting a recall.
